Scared of everything i have ptsd

Was threatened today to be fucked up in a psychopathic manner when I was asking questions in the car with my mom. She didn't do anything and he threatened to hurt me and screamed at the top of his lungs as he was driving and spitting disturbing insults. Then was told I was being taken to the police station and given his very very sociopathic act in the car as I was told "I'm sorry I'm praying for you. god loves you". What sick person says that to a person who they are screaming at? And the day before they threatened to kill me for not being able to find a lighter so they can get high? Drugs are very bad. I don't have my brother anymore because of them. He smokes everyday and is a constant control freak. I am 17. This has been going on since I was 8. He is 23. I have been getting hit since I was little and when I was 12 I remember specifically when I was hit over 20 times by an 18 year old because they thought I took a picture of them because they heard the shutter on my phone and were paranoid from the drugs probably. So they ran into the next room screaming at me accusing me of taking a picture of them. I did not, what the fuck, are you some kind of fag asking that question, so you attack me to take your anger out for that day with no reason? I didn't do anything I was just sitting there minding my own business and I had my head punched what felt like a hundred times to a twelve year old. Size does not matter even my 45 year old uncle that actually smokes pot with my brother was in my house and I got attacked just last year when I was moving, and told me to stop acting like a cry baby in my own house and to compare our size and that it is my fault while my grandparents literally just laughed with him as if it was a joke. I told him to get the fuck out of my house, and my brother had to talk to a cop who warned him if he is called again he will be arrested. But I have been attacked a hundred times since with the cops called and they have literally laughed at me and pushed me around and searched my room that I wasn't in. When I was attacked from behind a door that was being knocked on and I got no answer for 20 minutes. I opened it and got hit on the floor mercilessly after I was bleeding and the cops came and he told them it was because I scared his dog an hour earlier. He was drunk. This same person tells me they wish they had never made the prayer that I was born more than once. And degrades me every day. I am not worthless. I can't even own guns to defend myself until I am 21 now because of him but only a coward has a gun. He has guns and has threatened me with them over a dog being scared of yelling. because he had me get a psych evaluation another time that he attacked me and I defended myself but that wasn't ok I guess that I defended myself when I was 16 because I didn't want to be attacked and killed possibly by a 22 year old. I have been hit in the back of the head with a pad lock while in a headlock and pushed out of the car onto the side of the road with a blood gushing face and blood all over my clothes. He lied to the police again and told them it was self defense. This was right after I got picked up from school. He also hit me in the back of the head with lighters in his fist across the street from my school told me to have a good day and drove off flipping me off. Then he followed me into the school parking lot and the police questioned him at my house and he lied again. Denied it. But when I was thrown into the grass on the side of the road after being hit in the head with a padlock after I was already bleeding, he told the police it was self defense and recommended me for a psych evaluation. I had to Get x rays. He had me held there against my will. What could God to help me. I am scarred permanently from this abuse and am told to shut up in a loud tone and controlled by them all day. Help me