Got a fungal infection anus and scrotum area, i constantly feel like air bubbles or something moving is this the anal spinchter not working ?

Fungus skin: infection should not affect your anal sphincter, unless it is unusually and excessively deep. See a doctor to exclude causes of your infection or conditions that predispose you to fungus infections.

Hard to say: I would suggest you go see your primary care doctor first for initial evaluation and treatment. If not working, then seeing a dermatologist may be helpful.

Not likely: What you're feeling is most likely nerve endings that are irritated by inflammation. See your healthcare provider if symptoms don't improve after a week of antifungal therapy.