Green card holder marrying an f1 visa holder, How long does it take for a visa approval?

She must maintain her F-1 status for two more years at least. That means a new degree program and new I-20.

Am I legally allowed to stop taking classes (to save tuition money), after I receive a case number for AOS?

If you have a lawyer, why are you asking us? Getting a case number does nothing for your status. If you are completing your classes in...

Can I get my residency taken away or am I still good to go renew it with no problem ?

Your status does not expire, but you do not need to file for a new card.

Can I marry my fiance if she's covered by the temporary protection status and entered the US legally as a child?

You need to consult a Board Certified Immigration attorney. There are different options for her depending on if she entered the US with a visa or...

My attorney not cooperating with me ! What should I do ?

Go to the actual court that handled your case and ask the clerk of that court, not the county clerk, for a certified copy of your file.

You should not have filed the I-140 and 485 together and certainly cannot use the 485 EAD. Most NIW, but not all of course, are denied. If an...

That is a very bad idea. If your first petition is revoked you will be out of status and they will investigate the new petition.

Can I lose my residency, and just go get it renewed with no problem?

I honestly have no idea what you are asking. If it is a 10-year card, then you need to renew it in 7 years.

Am I eligible to apply for F-1 Opt?

You should use CPT before graduation and OPT after. Or you can use pre-completion OPT before you graduate but it will be deducted from your...

What options do i have if i have been undocumented for 11 yrs,and have 2 us child ( 6 and 3 yr)?

Believe it or not if you are put in removal proceedings you have a way to get a green card. So, I wouldn’t worry too much about it.