Abusive brother help me please?

(sorry if you heard this question before by me)he always mean to me he tried to get me screw in the head(hes mentally ill) he says things like your mother was d etc yesterday i was watching family guy he walks in like WHAT WHAT i say screw off attention seeker he punches me in the face he broke my nose i threw hot chocolate at him i ran upstairs my mom gets pissed at me for the hot chocolate on the floor WHEN HE BROKE MY NOSE i want to move in with my dad but i like my school and friends and my gf and my dads house is still being built and earlier today i was throwing up so i couldn't go to school then hes like you faker and takes a pic of me and says im going to show the school your faking and i know he wont but i have no were to go i cant runaway i have no were to go