On the Unity web site it says Ubuntu versions 16.04 and 18.04 and CentOS 7 are the Linux releases to use. At ubuntu.com I can't find either of these but version 20.04 LTS is available. Is this a release I can use to run Unity on? Thanks.
My experience is that the Unity Editor will run on pretty much any recent .deb-based system, and that any problems are far more likely to be down to the version of Unity you've got than the distro. The point of the distros listed by Unity is that those are the officially supported ones, ie if you do have problems on one of those (as I've had, on a Debian-testing-based distro and Xubuntu 20.04) there's no guarantee that you'll get any help.
Thanks, I tried Ubuntu Mint 2.0 and it worked well until I made terrains in Map Magic. Very jerky and things struggled. Tried all of the available drivers for my Nvidia card (GTX 1650 super) but couldn't get it smooth so have gone back to Win 10.