Mother (44F) Hit Me (23M) Punched Me In The Face. What Should I Do Going Forward?

I (23M) got into an argument with my mother yesterday. Was about groceries and how I "double dipping" down on items and that I get stuff that we already. I tried explaining that first of all, the stuff I get for myself at the store I most of the time finish. There isn't shit in the fridge that's mine that's just sitting in there but I keep buying more of it. Between me, mom and my brother, I'm by far the best at actually finishing the stuff that was bought from the store.

Whenever I clean out the fridge/freezer to make room for more groceries to put in, I always have to throw out shit that's hers because it's just been sitting in there for several weeks or months never getting touched. She says as a response "Well, it's my money so I don't care". So basically admitting to being a hypocrite and not really having a problem with what she's complaining about, she just has a problem with people doing it that aren't her.

We keep going at it and she's making points that I genuinely felt were incoherent. Like multiple times I'm saying to her "Genuinely, what are you even saying right now?" So I call her out for being drunk (she has an alcohol problem) because during this whole interaction she was being super hostile and belligerent which is how she gets when she's drunk on top of being incoherent. And when that happened, she just loses her mind insisting that's she's not drunk (she always says that she's not drunk whenever she's drunk. Idk why, must be some weird defensive coping mechanism) and not being belligerent. We argue some more and she gets a little handsy. Nothing crazy, just little light slaps because she was angry. I said some shit to her and she just punched me in the face in my eye area. Instantly I hit her back because it crossed a line and was uncalled for. Ended up having blood dripping down my face and now have this huge scab on my eyebrow. Also attempts to hit me with a stepping stool, her vodka bottle, saying that I wish that she was drunk because her sober self would shoot and kill me if we had a gun, that I was the catalyst for her drinking years ago, that my father abandoned us when I was a child because he didn't want to deal with what was wrong with me (mental health issues), all this crazy stuff.

Luckily my brother (21M) was there so he comes out and tries to restrict her/calm her down. Also clocks that she's drunk. I really wish I had the means to move out but I don't have a job right now and haven't for a while due to life circumstances. This has been only been the 2nd time we've had a physical altercation due to her alcoholism but far from the only time I had to deal with her toxic and problematic behavior. I'm so sick of this piece of shit

TL;DR: Mom put her hands on me and punched me in the face over an argument. I want to move out and cut contact but as of right now, I have no money.