This looks like a 2 degree superficial burn.
It heals on it's own in 7-10 days provided it doesn't get infected.
My advise would be to apply some antibiotics ointment on it to prevent such infection.
Next Steps
after it heals, use sunscream for 3months to prevent hyperpigmentation.
Health Tips
Can see a burn specialist or plastic surgeon for epidermis removal and collagen dressing to cover and make it painless.