I'm cooked

Ok so I recently got a new phone for Christmas (ty dad) but anyways I left the old phone at my dad's house and on the phone it had tiktok and I'm pretty sure I forgot to delete it and he just text me asking for the password to that phone. I gave it to him because I forgot about the tiktok but I don't know if he is gonna go through it or not but if he does then I'm prob gonna get my phone taken away and I'm low-key really nervous wish me luck 🤞