i am 16 years old and live with my 18 year old sister. but next year (august 2015) she’ll be moving out and my dad doesnt want me to stay home alone. so my dad wants me to move in with him and his gf . but i DONT WANT TO at all. basically can i go to court and get a paper signed to say i can live alone ?
You will need to seek legal advice, because every jurisdiction will have a different view of your situation.
Speaking as an old man of 57, I would be very worried about someone of your age living alone. First, there is the economics. How can you support yourself? Second, there is a long list of things that could go wrong that would result in you being killed (or worse).
Why do you not want to live with your father?