What date should I fill in form i539 section 3a for change of status from H4 to F1.

You are the one who knows the answer to aforementioned question. Goodluck.

Is a fee waiver for the form I-485?

Form I-912 is the one you need to complete. Goodluck.

Is the MAVNI programs fy 2017 open? Can I apply ?

MAVNI programme is currently suspended. Goodluck.

Remove conditions on my resident card

REtain a lawyer to handle your case to avoid further confusion and delays. Goodluck.

H1b transfer

Your employers have competent lawyers, contact the lawyers to discuss your concerns. Goodluck.

Do you know how long can I be out of USA with AP? What is the percentage for CBP denying an entry at POE?

No, you should not be worried unless your I-485 is denied in your absence. Goodluck.

How soon can i marry my US citizen fiancee here i US while i'm on a b1/b2 10 yr multiple entry visa?

You may run into a little problem called intent. Contact an immigration lawyer to discuss your case. Goodluck.

There is a record of it somewhere. Provide the requested information on the RFE and you may explain your reason for none disclosure at the...

Portability applies under AC21. Utilize your employer's attorney for all your immigration needs, he well positioned to assist you. Goodluck.

Found out that I may have had a social security number after I submitted my driver's license application?

Same way you found out you may have had it before abandoning it. Where did you get that infornation? You can contact the SS office. Do you have...