@Susana640 When you accept a guest reservation, you will see a breakdown of the fees and taxes that AirBnB has collected from the guest in addition to what you will be paid for the booking. There are ways to get this information printed out, but I find it much easier to keep a simple spreadsheet noting each type of payment. That way I can quickly complete the monthly tax forms required by my rental property location in North Carolina.
As to your question about licensing, you need to investigate your local laws. Talking to a real estate professional or visiting your local municipal office may help you find out more.