Variables in other scenes?

Hello. When setting up a variable, how can you reference an object in another scene?

Assuming I understand the question, the answer is, you can't (not as far as I know at least).

You can however cause objects to persist between scenes using DontDestroyOnLoad() (and there are a few other ways to share data between scenes as well).

well its not completely clear what you exactly want,do you want to use a variable declared in some other script,and you are asking how to get the reference of that variable from the other script.