New 2020 MacBook Pro Will Not Stay Connected to Wi-Fi

If you have a connection to the Internet that is 1 Gigabit, ANYTHING you do with Wi-Fi will be slower than that.

Consider installing an Ethernet cable, that will provide an error-free full-duplex Gigabit Ethernet connection from the outset. You don't need fancy cable types, but all eight conductors must be connected. (Some cheaper cables just sneak by with only four wires.)

RSSI (raw signal strength at -52 is great, you must be very close to your Router.

Are you close enough to consider a faster (Gigabit) Ethernet connection?

Noise at -92 less signal at -52 yields signal-to-noise of 40, truly amazing, you should be having no trouble, unless you are on the exact same channel as another device.

Number of Spatial Streams (NSS) of two [essentially number of antennas] and MCS index 8 shows a complex 256 patterns per signaling interval. You are using an 802.11ac and 80 Mhz channel, only possible in the 5GHz band. You were able to attain a Transmit rate of 780, which indicates low interference at the time you made the connection. You did not report what channel number, which may be important.

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There are additional tools available off Option-Wi-Fi menu. there is a Monitor function, which can be left open in the background, and you will be notified if your connection deteriorates. AVOID the Diagnostic Report, as it is only a DUMP of all possible settings files, with no human-readable output, useful only when working with an Apple Engineer who has requested this output.

There is also SCAN, which produces a picture like this one, showing nominal channels. HOWEVER, since at 80 MHz ANY channel between 35 and 50 uses that ENTIRE spectrum, you need to reward the chart very skeptically:

(drag and drop on Preview to see larger)

I use and recommend WiFi Explorer, and inexpensive tool with a modest free trial, because it has a SPECTRUM display:

(drag and drop on preview to see larger)

If your Mac makes a connection, hold the option key while you click on the Wi-Fi icon on the Menubar, and post the snapshot of the state of your connection, or transcribe the values.

Also, how many Networks do you see listed there?

The "approved method" for dealing with interference from other networks is to set your Router to "automatic" channel assignment. This forces it to sniff the airwaves when it starts up, and choose the least busy channel.

Then if you have trouble later in the day, "Cycle the power to your Router" and it will choose a less busy channel. It is not an accident that "Cycle the power to your Router" is always step1 in any debugging procedure, because it has the potential to clear channel conflicts.