How to keep Moss

I got gifted some moss, and I’m not sure where to put it, on top Of my house plants soil? I have an old terrariam but its soil is dried up and a few years old. Could I put it in that and would I need to do anything to it?

My special interest is moss facts but I know more about their context in the world rather than how to take care of this special plant! New to this subreddit :)