You would have to research the regulations for a definitive answer to your question, but is this really a fight you want to have this early in your...

How can I upgrade my military discharge?

These cases are very fact specific, so you will need to have an attorney review your case and advise you as to the likelihood of success.

Could I be eligible to enroll in the army or marines?

You would have to speak to a recruiter, but I think there is zero chance you will be eligible to enlist, based on the information you provided.

What happens in court and why all the paper work ?

This is not a military law question. I recommend you re-post under family law. But in my experience such paperwork is absolutely routine.

Is there anyway that the theater is at blame?

I am not a CA lawyer, but I don't see how the theater is liable. You might want to speak to local counsel to confirm, but I don't see this as a...

I've been advised that I can sue both the family and the VA. Is this true? More details, not enough space.

While you "can" sue anybody, any such suit under these facts is unlikely to prevail. Best bet is to pursue child support.

I have two bench warrants and one arrest warrant , will i be arrested if i go to court

I think it is likely. You should retain local counsel to appear for you and to address the outstanding warrants.

My x wife got the truck in final divorce. I changed the after market parts and sold for $. She flipped out. What can happen?

While the police might not get involved, she might take you back to court, in which case your lawyer fees will be more than the value of the tires...

I'm 15 years old and I'm with a 23 yo. I'm soon to be 16, and was curious about a few things

Run, do not walk, away from this man.

If I bought a lottery ticket and it say I won 15 dollars and when I went and cashed it in they said I won 5 but it clear shows

Yes you can sue. No it is not worth doing so.