I’ve heard about a melanoma vaccine. Is it available to the public?

All are experimental. There are no fda approved vaccines for melanoma of any type. There have been many different vaccine strategies to treat (not prevent) melanoma but none of them have yet proven effective. It has nothing to do with hla testing or il-2. There are several vaccines in late stage testing for melanoma that could release results within the next year or more, so this answer may change relatively soon.
No. Melanoma vaccine is a therapeutic vaccine for patients with advanced melanoma of a specific tissue type (hla). When used with il2, it boosts the immune response against melanoma cells. It is not used as preventative vaccine to prevent the occurrence of melanoma. Sun protection and routine skin checks are the best way to reduce your risk of developing melanoma.