@Noris-Angela0 When you look at the tax settings in your listing, is the 4% tax you are inquiring about listed there?
If the tax is listed, then AirBnB is paying it. You will get no proof that they are actually disbursing it and nothing from AirBnB for you to submit with your own tax report.
I fill out my tax reports monthly, quarterly and yearly with the income and taxes calculated, but with a zero-balance due. I send a form letter stating that all taxes were collected by AirBnB (and my other OTAs) and that I do not owe any taxes. This was on the advice of my CPA.