hello there ,
or cut to the gums heal by its own with time provided the injured is not infected .
healing also depends on the type and size of the cut . If the cut is small it will heal by its own with time but if the cut is severe , it needs attention.
severe laceration of the gingival tissue needs to be sutured in position which helps in quick healing , sutures are removed after 7 days.
I would suggest you to consult a dentist
and get the clinical examination and evaluation done accordingly treatment can be carried out.
meantime,i would suggest you to go for symptomatic treatment at home like gargling with lukewarm saline water or antiseptic mouthwash like chlorhexidine
. which helps in giving soothing effect.
i hope this helps ,