Payment for my likeness in a portrait?

This person reached out to me over TikTok, and I will say my comments have been getting a lot of likes so I’m guessing she saw my profile picture through there. It’s just my face with sunglasses on though, so this feels so random.

I just don’t understand what the scam would be? I am broke as a joke right now so $500 would be nice to have lol. I don’t care if she uses my face, but I don’t know what the risks are since I know nothing about the art world. She does have a video on her page of some portraits of women.

Do I move forward but just demand Venmo or Zelle so she doesn’t take my bank info? Should I ask for more money? Do I need a contract? Help!