Dear Mahamudur
Assalamualaikum.
There are few Payment Method in Airbnb payout system, i.e. Airbnb Debit Master Card linked with Payoneer Account, Bank in to Local or International Bank, Receive money by Western Union etc. You can choose either option which is comfortable to you.
If you choose bank in option by TT to Bangladesh bank account it is a bit expensive due to the TT Charge but if you have account in Malaysia, Singapore, Europe, USA there is no bank in charges or having very low charges depending of that Bank rules & regulations. In this case you can select Airbnb Prepaid Mastercard or If you have any payoneer card you can link your card here.
You may choose Western Union option also there is some charges but less than the TT charges. You can go payout option in your Airbnb back office and find out more.
You may join "Airbnb Bangladesh Community" facebook group to learn more. The link is:
https://www.facebook.com/groups/538160966962145/
Thank you
Regards
Mizanur