Would I be wasting my time taking my ex for a modification on support if he's already paying $600+/month

There's no way an attorney can answer if its worth it or not online without looking at your entire case.

Can ll charge late fee every month, if I pay rent on time, but am actually paying previous month?

Yes, because it sounds like you're late.

Will I need to meet with my probation officer and can I get early termination of probation?

Generally speaking no, but it helps to have their recommendation.

yes, you possibly do, however, do they have any money? If they don't, they're never going to pay you. You also can ask the DA to prosecute them.

I have been divorced for 12 years but my ex husband has been paying for everything. Can I still ask for alimony?

Contact a family law attorney asap to look over your divorce paperwork.

Grounds for restraining order?

Depends what they're issuing the restraining order for.. contact a family law attorney asap.

I went to trial for domestic violence chargein a child endangerment chargethey are drop down to misdemeanorsbefore the trial

There's no question here. Whats your question?

Usually not, however, in some states, it depends on the traffic offense.

I got into an car accident it was me and my three kids the driver of the other car took full responsibility of the accident

You need to hire a very good PI lawyer immediately.

Is it rape?

Could be statutory rape given the age difference but that depends what state he lives in. Intoxicated sex also could be considered rape depending...