I got very sunburnt on my face and my forehead is swollen and soft. There is fluid under the skin how should I treat it and will it peel?

Yes. It wil peel. Stay out of sun. Cool water. Vaseline or Aquaphor. After you heal, use a hat, sunscreen, look for shade. AVOID bacitracin, neosporin, any antibiotic. AVOID peroxide, alcohol, or any antiseptic.