Hi! :welcome: We are glad that you posted here! This looks like a homework question though. Our homework help policy can be found here. We mainly just want to see what you have tried so far and that you have put some effort into the problem. I would also suggest checking out this thread for some guidelines on smart posting behavior that can help you get answers that are better much more quickly.
You don't need to figure out if it's binomial or geometric or anything like that (because it's none of those). The easiest way to do this is just do it directly - look at your sample space and see which values in your sample space map to which values of your random variable.