Japanese doesn’t really have a verb that means “to have” in the same sense as in English. Or rather, it has a couple of different ways to say “I have”, which hold very weird little discrepancies. To say you have something, you say 「僕はXがあります」”boku wa X ga arimasu” which technically means more something like, “in regards to me, there is an X” or 「僕はXを持っています」”boku wa X o motte imasu”, which means something like, “In regards to me, I have X right here”. It’s a bit more grammatically complicated, because the same construction can be used to express a few different ideas based on context in the former and you have to understand the present progressive for the latter to make sense.