The only way out of this is you leave, immediately. You live on your own even if it means you're happier living in a shelter or delivering pizzas/washing dishes etc. You don't get the comforts of home, but the only way you can prove you can be independent is to go out on your own. You don't tell your parent you are leaving. You just pack up whatever you can and leave immediately.
Maybe put up with one more night if it's too late to leave. Get money from the bank immediately the next day if you have any money in the bank and need it.
I'm also not sure what you mean by a "cam girl."
Do you mean that this parent sexually abuses you or that this parent shows your privates to other random people on the Internet?
You can call 911 if you need help.
National Sexual Assault Hotline
Call 1-800-656-4673
Available 24 hours everyday
Call RAINN immediately if you're being abused.