2020 macbook pro fan going really high when not doing anything

So what is the proposed solution to this? Just delete chrome and it will fix it?

No; you must follow Google's uninstallation instructions. Contact them for assistance: Contact a third-party vendor - Apple Support.

I don’t have anything else google installed on the computer. ...

Incorrect. You cannot install Chrome without also installing Google. That puts Chrome in an entirely different category than browsers like Brave, Firefox, Opera, and others.

Or is it possible like I asked before that I have some kinda crypto miner that got installed somewhere?

Installing Google turns a Mac into an information-harvesting and -uploading "bot" in the same category as a crypto mining process. Data mining, crypto mining... the only difference between the two is who benefits.

And what is installd? That’s taking up even more percentage that google

Most likely, one or more of Google's constantly self-updating "helpers" is being installed on your Mac. It will do that periodically without letting you know, which understandably causes user confusion when a Mac was performing perfectly well one day only to spontaneously work poorly the next. You agreed to all that when you agreed to install Google. It is by far the most common performance-hindering system alterations on Macs.

I don't believe you quite fully appreciate the implications of installing Google. Think of it as a virus, because it is the closest thing to a macOS virus there will ever be. The difference between it and a theoretical Mac "virus" is that you must agree to installing it, it makes little attempt to hide what it's doing, and it is easily uninstalled.

If you are required to use Google you wasted your money buying a Mac. Buy a Chromebook.

Google updates its many "helpers" and processes in the background as it constantly scours your Mac for personal information for them to sell. It will do that whether or not you are actively using its Chrome product. If that causes your Mac to perform poorly or to cause its hardware to fail prematurely they do not care.

Google may be "free" but if you are required to use their products and services on a Mac, prepared to buy a new one every couple of years.

whether you actually appear to surf to ggoogle.com or not, google has its hooks into you in many ways.

To see part of the extent of it:

Safari > Preferences > Privacy > (Manage Website Data) ..

in the search bar type: goo

now look at all the cookies and caches they have blessed you with.

The drive in this computer is more than 100 times the typical speed of drives in computers a decade older.

If you have installed software that wastes computer resources on a regular basis, such as third-party Virus Scanners, speeder-uppers, Cleaner-uppers/Removers, Optimizers, third-party file Sync-ers such as DropBox, BackBlaze, OneDrive, or GoogleDrive, or a VPN that you installed yourself, it will do busywork at previously-impossible speeds — heating up at a ferocious rate. 

This older junky software used to run as fast as it could, then would then have to suspend itself to wait for the disk drive to catch up before continuing to waste resources. With a really fast drive, that drive-speed restriction is gone. In many cases it still does not show up as using a lot of CPU, because it is doing a lot of intensive I/O, and not a lot of computing. That will still make your computer slow and heat up.

patricfromhayden wrote:

It doesn't actually seem to be that it's chrome doing it, it's just the website, https:/google.com, so I don't think it's chrome or any background updater

Activity Monitor disagrees with you.

Do you have an external monitor attached? Is the computer in clamshell mode?

Have you tried restarting to see if installd shuts down?

Can the computer "breath?" Is anything blocking the hinge area of the keyboard?

Two of your screenshots are showing "installd" as the top most process consuming CPU cycles. Something is installing & updating on your Mac.

All Chromium based browsers are resource hogs sometimes utilizing enormous amounts of both CPU cycles and memory. Google Chrome is the worst of them because it also includes all the Google data mining & monitoring & advertising bits as well. I know on my Chromium based browser Vivaldi, that once in a while I must actually delete "storage browsing data" (not sure what that all includes, but it can help restore resources to my computer...not sure if this is available in Google Chrome proper or not).

To look for possible software issues and to provide us more details about your system including performance stats and summaries of system logs, run EtreCheck and post the report here using the "Additional Text" icon which looks like a piece of paper.

FYI, another app or process can be interfering with the system even though it may not be using much of the CPU. The app/process can tie up some part of the system which may have an adverse affect on other apps or even macOS. Even a file system issue can cause performance issues.