what is mac Speedup pro pkg

It's a scam attempt. No one can remotely tell what is running on your computer unless you give them access. So all such popups/emails/calls saying you have virus' is a scam attempt. Do not allow the thieves access, do not reveal personal or financial information to these scammers.

This showed up and told me I had viruses and my Mac is in Danger? But it seems it is a Virus itself????

Does someone know about this? Thank you

Avoid phishing emails, fake 'virus' alerts, phony ... - Apple Support

If you suspect you have download malware, adware on your machine, you can use the trusted

https://www.malwarebytes.com/mac/

to successfully help you.

How can I uninstall or remove mac Speedup pro from my Macbook pro permanently?

If MWBytes doesn't do it, this should find all the traces of it...

EtreCheck is a simple little app to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac.

http://www.etresoft.com/etrecheck