Should I use Unity for this?

I’m making a very simple Android game, it resembles a Quiz, but the interface itself is very simple all I need are buttons, images, text (with custom fonts), text box and audio. The interface also needs no animation and the background is as simple as you can imagine for this game theme. The game can be done with Android Studio, but I’m sure I can do it more faster with Unity. By which way should I go to do this “app-game”?

It really depends on the project requirements. There is no right answer.

Unity is pretty lightweight for a game engine, but it’s very heavy in terms of mobile apps. If you’re looking to make something simple, I would recommend a more lightweight approach, such as with Android Studio.