How long does the green card process take for being married to someone in Military?

It depends where you are filing. Six months is normal.

Can I file for H2 when my f1 file is still pending

There is no reason why not.

You cannot do a change of status to ESTA, you would have to leave the country.

It is not a good idea to file without all of the basic, required documents.

My Mom has a B1/B2 valid for 5 years she came and stayed for 1 year " by extending the visa to another 6 months "

There is no rule but common sense, whether she has an unabandoned foreign residence to which she intends to return.

MY CASE IS I-129F AND IM ALREADY MARRIED .. MY CASE IS IN THE NATIONAL BENIEFTS CENTER??

If it is a K3, probably in the next six months. If it is an F1, he will not be admitted on a K visa.

I got RFE on my h1b in June.I submitted all the docs on July 18th to my employer . RFE was filed on July 22nd.Still no response

There is no set amount of time for a decision.

My employer keeps telling me that they are waiting on H1B prevailing wage determination for about 2 months now

It is probably the truth.

Where can I verify or see my current individual earned annual income to be put on form I-864?

Yes.

I have approved I130 in 2012 in removal proceedings, Master hearing rescheduled in 2015, how to get EAD ?

File the I485 and application for a work permit.