@Graciela16 Others mentioned payment via the Resolution Center, based on the guest's Security Deposit. However, your listing doesn't require a Security Deposit, so this particular incident will probably be quite dificult to resolve.
For the future, I highly recommend that you add a Security Deposit of $100 (USD) or more. To arrive at the appropriate amount, think of what it might cost you if a guest ruined a set of sheets and pillow cases, or a duvet cover, or broke another door, or created such an extreme mess that you had to hire a cleaning service above and beyond your standard cleaning. No matter what your nightly rate is, a deposit of $USS 100-200 (or more) isn't asking much. Keep in mind that guests don't actually even PAY that deposit; it's simply a pre-authorized amount that AirBnB can ding the guest for if necessary.