I grew up in a house where my parents fought a lot, and I kind of got in between that, and occasionally ended up calling the cops when it got too much.
First thing - it's not your fault they are arguing, regardless of what they say. Also you should not get involved, and they should not involve you.
If you still go to school, you may ask your school for a counselor/psychologist (the support system might differ where you live tho), who you should be able to talk to confidentially.
Other than that, moving away, either for school, or to find work to live on your own, is a great plan.
You could talk to your parents about it, but in my experience 99/100 times it doesn't do ****.
"If you need a safe space, see a therapist" - Jordan Peterson