On a PC, you just run the Game.exe. Assuming by "install it" you've unarchived the .7z file, or are using the itch.io "butler" app to handle it. "Bad things" may happen if you try running it from within the archive, the least being that saves won't persist.
On Android, I assume you're using JoiPlay, and whatever it takes to play any RPG Maker MV game with it. You'll have to ask somebody else for help with that then, sorry.