Being unhappy with your parents rules is not grounds for emancipation. It is, in fact, a strong reason a judge will refuse you. There doesn't appear to be proof of abuse and without that there is no abuse. Strict rules and punishment are a parents right over their child and not abuse. Leaving marks from a beating is abuse. Your parents may have a valid reason for not letting you have contact with a boy they do not approve of.
My suggestion, grow up and start following your parents rules. While I don't agree with your bio father being bad-mouthed, it is what it is and you have another year. Make the best of it instead of resisting the authority that you have to live under. Yes, I do think you need help and there are many therapists available for you to talk to.