Despite the fact that it was released more than a month ago, GNOME 40 is, currently, like a unicorn; we’ve heard about it and everyone talks about it, but we haven?t actually been able to see it much in action. As yet, only a few distributions are offering it in their repositories or pre-installed.
For now, as far as I know, if you want to use GNOME 40 as your daily driver, you have to either install Arch Linux, which isn’t something newcomers will be able to drop into, openSUSE Tumbleweed, which is a lot easier to install, or the recently released Fedora Linux 34.