Not just anyone, but it’s not too hard. They expect to be able to get you into shape. There are also waivers available for disabilities, if you score high in the ASVAB you’re more likely to get one. OP didn’t mention any disability so it shouldn’t be a problem.

And different branches have different requirements. A buddy from high school with a horrible home life and no prospects was too heavy for the Marines but the army took him. Got a specialty with transferable skills in the real world and has a great life now. In and out before 9/11 though.

Say you lost your driver’s licence/ID and need your birth certificate and SS card to get a new one, a new passport is easy enough if you have those basic documents.

I’m going to get burned like crazy for saying this but if leaving right this second, like NOW, really means homelessness for you; go join the air force. Sign the papers, pack up what they let you bring and forget about everything else. If your family gets wise to what is going on and tries to stop you, they will come looking for you and your family will be in deep shit. Maybe even mention to your recruiter that if you don’t show up at the appointed time, you’re probably being held against your will, might speed things up.