How do you make a(simple)script so you have to collect a set number of items to enter another Scene?

Hello there, Community. I am working on a game in which the player has to navigate through enemies to collect a bunch of items. After the items are collected, the game should take the player back to the Title screen. I am, however, very new at JS, and of course, each time I try, it dosen't work. I've tried multiple tutorials, but none of them worked. I would really appreciate some help.