Help with Tailscale + Mullvad in handheld Bazzite

question

hi friends I have a legion go 1 running latest handheld Bazzite, KDE plasma. I read that Tailscale is pre-installed but I can't find anything and I don't really get how to make the Tailscale account and link it with my bazzite. I'd also like to use Mullvad exit nodes but the docs explain that well. any help setting up tailscale would be greatly appreciated!