Child Abuse

I am a 12 year old girl who is abused by her mom at least once a week. She abuses me mentally and physically. It has happened since I was like 5. I don’t know what to do anymore. I have so many things wrong with me. I’m so done with her. But I’m only 12 so I can’t move out yet ugh. If you want me to go into anymore detail let me know. But what do I do?