@Gaurav64 I'm not sure if this could be the issue, or you are just confusing the terms Airbnb uses, but "payment method" refers to the way the guest is going to pay for a booking- i.e. their credit card info.
" Payout Preference", which that screenshot references, is how a host wants to get paid- into their bank account, paypal, etc. (the options available to you vary depending on what country you live in)
So if you are trying to set up a listing, it's the payout preference you need to fill out, not the payment method.