Create a TikTok specific question in the profile to match the other social medias.
This would be helpful as to link people to platforms they use.
For now, you can do that yourself via the profile questions. I'll add this to our feature requests issue tracker. Though it seems that TikTok is about to be banned from the google and apple stores if the FCC gets their way. If that happens, we cannot add this feature due to the reason they may get banned.