@Kim-And-Hamid0 Airbnb does indeed charge and collect funds from guests at the time of booking. The payment process is designed to protect both hosts and guests by holding the funds until after the check-in date to ensure both parties are satisfied.
If your guest threatens that he will file a chargeback against Airbnb, most likely he will declare it as an unauthorized transaction, for him to win a chargeback, they would typically need to provide evidence to their credit card issuer that it was indeed an unauthorized transaction.
Airbnb has policies and departments in place to handle disputes and chargebacks. They may represent the host in disputes, provide documentation of their cancellation policy, and attempt to show that the service was provided as agreed or that the cancellation policy was clear and agreed upon at the time of booking. In these kinds of cases, the Host's policies will still stand as it will be hard to file for a chargeback without valid documentation. Hope this helps!