I got very bad sunburn three days ago and got very bad blisters over my face. Today almost all of my skin has peeled off. My face is very red?

If a large portion. of the face was blistered - I would have recommended medical evaluation. Sometimes applying aloe vera straight from the plant can help to expedite burn healing.
Protect your face. It is going to be red for a while. Protect your face from the sun using a hat and once the skin is back to normal do not forget to use suncream.