Which doctors can treat my gum and it need surgery to heal and which medication doctors will give me and how many visit I need

A dentist or oral surgeon.

What they have ot do and how long all depends on your specific situation and what all has to be done, and if it can all be done in one visit..

Nobody here can guess because we don't have the answers to those questions.

You would need to see a periodontist. That is a kind of dentist that specializes in gum disorders.