To be able to receive payments, you must COMPLETE the interview.
When you do, Itch may show you as "on file."
When you request your first withdrawal, Itch then sends the interview to a third-party company that validates it. If there are no issues with the validation, Itch will pay you the corresponding amount and deduct the $3 from the first validation.
From the time you request a withdrawal to the time you get paid, it was normally around 2 weeks, but with the problem with NSFW games, many people have reported double the waiting time before receiving payments, I don't know if this is normal for the entire community or only for games with NSFW content.