I AM 14 AND I GOT PUNCHED IN MY EYE BY MY 20 YEAR OLD BROTHER?

I WOULD LIKE TO SUE HIM INSTEAD OF RETALIATE . HOW MUCH COULD I SUE HIM FOR . HE PUNCHED ME IN MY EYE MY EYE IS SWOLEN SHUT I CANT SEE ANYTHING AND I DONT REMBER MUCH OF ANYTHING