I'm 20 Years Old and my Eyelids Upper Droop So Bad I Look Like I'm Always Mad What Can I Do?

At 20 years old it is unlikely that you have excess eyelid skin as do older individuals. You may have ptosis or actual anatomic drooping of the lid that covers the iris or colored part of the eye. If this obstructs vision it may be covered by insurance for peripheral visual field obstruction.

Other causes may be a low brow, but surgical indications are few in a young person as you. Often a neuromodulator like Botox or Dysport can alleviate the muscles of the Crow's Feet and Glabella (between the eyes) to help lift the brow several millimeters. 

The only way to determine the best treatment for your concerns is with an examination or photos.

It sounds like you have ptosis, but without examining you or at least seeing a picture, I cannot tell you for sure.  There are no creams to help ptosis.