No need to worry. I suppose he scratched you with his nails, which can be painful, but it was a no risk event for STD's. Don't worry.
ok, so even if he had cuts too there is no risk of transfer of something like hepatitis or hiv? thanks for your comment
If he had an open bleeding wound and you had another bleeding wound and you 'share' your blood by touching your wounds, it woud be some risk but, of course, those situations don't happen in real life and that was not what happend to you. I recommend you avoid those kind of clubs, it sounds a bit scary. A man shouldn't force any woman to do things she doesn't want to do.