Please note this will only force you to set up a passkey if you don't use the authenticator app as your primary 2FA setting. Passkeys require a mobile device, personal or company-provided, to use.
If you do not want to use a passkey, click "Not Now" and follow [this guide](https://scribehow.com/o/CGF8NJ0jRTeLEA8__7C8UA/viewer/How_To_Remove_A_Phone_Number_From_Your_Account__3jqkzS_CQAq0G9b6SgyiaA) to remove your phone number from your account.