My parents abuse me and i dont kno what 2 do?

im 13 and my parents have been abusing me since i was about 3 physicall, verball, and emotinal... they hit me ALL the time for no resson... like when i was 4 my mom was sooo mad at me 4 not eating my vegstables that she hit me soo many times that i still have a scare from it and then she told me 2 leave like she kicked me out of the house and i hid in a tree for like hrs... ive always just delt with it... but a few weeks ago my mom was hitting me all the time and she was saying horrible things 2 me everyday that i was so sad that i couldnt go 2 school and i was so scared of what was going 2 happen that i put a bookshelf in front of my door 4 a rlly long time... well my question is what would happen if i told some1? i kno most of the time they send u away 2 live with relatives but i dont kno any1 that lives in america and actully i dont have any that i have ever meet...and also what would happen 2 my parents? i rlly dont kno what 2 do and sometimes it gets rlly scary...what should i do?