@Jan46
Sorry, EVERYONE has 'Settings'. Unfortunately, you don't seem to know how to navigate your Dashboard.
First and foremost you could not have opened an Airbnb account and began hosting, meaning receiving money without entering PAYOUT METHOD.
There are 2 ways you can address the current request:
1) click on the email you received and it will take you straight to your Settings: Payout Preference.
2) Go to your profile photo on top right hand of web-page.
Click and drop down menu appears. First 4 subjects:
Profile
SETTINGS
Transaction History
Your Guidebook..
--------
CLICK ON SETTINGS
Menu again:
NOTIFICATIONS
Payout Methods
PAYOUT PREFERENCE
Transaction History
Privacy
Security.
Click on PAYOUT PREFERENCE and proceed to update.
Please stop blaming Airbnb for your own ignorance!