Alright, if you do not know ho to use a spirit box here is my guide:

First equip the box then, right click on the mouse and now its turned on. Then, talk to the spirit box. You might say "what???"
But listen. You gotta say things like: Are you french? How old are you? Where arer you? are you angry at us? etc.. (and yes the "Are you french?" works. Ik, its funny but it does.)