I accidentally burned myself and blistered. I don't know what to do with it.

You should immediately place your affected area under cold running water and rinse for at least 30 minutes. After cold treatment, if your blisters are small, you can apply scald cream without special treatment. If your blisters are large, you can go to the hospital to extract the liquid from the blisters with a sterile syringe, and then disinfect and apply scald cream.