In Ubuntu 18.04 the topbar of the Terminal window contains the following pull-down menus:
File - Edit - View - Search - Terminal - Help
In 20.04 they were missing. I DID manage to turn them on, by right-clicking inside the Terminal window. But I think it would have been more logical if you could just turn them on in Preferences.
The worst thing is that I have to turn on the menu bar every time I enter the terminal... That seems kind of primitive to me.