Depends an rtx 2060 costs around £120 nowadays pair this with a cheap sandy bridge ivy bridge quadcore 8gb of ram or 16 if your feeling fancy and a 256gb ssd and 1tb hdd and you got yourself a decent computer
Not really. An RTX 2060 only has 6GB of VRAM. A PS5 has 16GB of unified memory, so it's going to potentially have more VRAM to work with.
A 2060 isn't awful, though. That's what I've got in my nearly 4 year old laptop. It can run pretty much everything, although some of the newer games are probably a little too demanding for it to run on the best settings.
You could have a petabyte of VRam it won't make up for the fact that consoles have to use less powerful chips due to their form factor and can't cool appropriately.