If it is cancer, find out if it is from HPV. If it is not, I've been told it is often from earlier smoking and later drinking. If not from HPV you'll need to avoid all smoke and drink. You'll also need to find treatment where they have experience with head and neck cancers (and not just cancer).
There must be more you'll need to ask.

SCC stage 1 Nov. '03,
SCC stage 2 (clear mrg, no rad, no chemo) RND, Feb. '15
SCC stage 1, lower gum Mar '23