How do I install a custom shell theme?

How can i unlock custom shell ? when in other gnome versions it can select the shell I want. I am using gnome version 43.1

Moderator edit: Moved query from topic title to first post

Welcome to the forum! :wave:

You’ll need the User Themes extension enabled. It’s part of the gnome-shell-extensions package which should already be installed.

Also make sure to store any downloaded themes in ~/.local/share/gnome-shell/theme

Since he has a custom theme (looks like WhiteSur) installed, the matching GNOME Shell theme should already be in /usr/share/themes/<theme-name>/gnome-shell/ or ~/.localshare/themes/<theme-name>/gnome-shell/.

I have a Gnome install and the downloaded themes are in ~/.local/share/gnome-shell/theme/<themename>, looks like there are a few places they can go.