I need help

Hi guys. I really need help getting out of my marriage. I don’t know where to start or what to do and I’m honestly just afraid. Today was really my last straw, we started arguing because I asked for help cleaning and he went back to bed until 10:30. He proceeds to call me a bitch, get in my face screaming, and tells me he’s going to beat me. He hasn’t laid his hands on me yet but I’m honestly afraid he will. I’ve tried so hard to keep this marriage going for our son but I can’t take the mental and emotional abuse anymore.