Concerned about my parents funds.

Not sure what tag to use for this because they are not divorced, so sorry if it’s the wrong one. They have been arguing constantly and it’s extremely tense all the time, this has been going on for a long time. I have two younger siblings, about 3 years old. My mom does not make much, and my dad makes a good amount of money but not enough to support a family without her income. If they were to split up, which I’m not confident they will, what would happen? Would I have a home, would she be homeless?