It's impossible to copy or paste text via touchscreen since Gnome Terminal 3.32 release
Hello!
In Gnome Terminal 3.30 it was possible to use application menu to copy or paste text. Since version 3.32 there is no menu and no dedicated buttons for clipboard access.
Like in issue #67 (which is about text selection behaviour) I would recommend either copy gedit behaviour (tap on selected text reveal action buttons, like here) or add buttons to application menu, just like in Nautilus. I assume second route would be easier to implement?