Is There an Infinite Number of Dollars?

Some people suggest that you might be able to prove that the universe is infinite if you can come up with a theory of cosmology that describes the universe. If your theory only works for an infinite universe, and you can exclude all other possible theories, but i'm not sure philosophically that's even possible. So this is another like potential infinity, but its tantalizing because we can never actually know whether the universe is infinite. But you don't need to look out into space to see potential infinities. You just hold your fingers apart and say, well, how many pieces of space are there between my fingers? How many unique locations? How many different possible spots could a particle be