Should I postpone my 2nd AOS Interview ?

Your question is confusing - did you get an RFE or did you get an interview. As far as interview rescheduling I agree with my colleagues and add...

Can I fill out a petition for my brother who came with a b1/b2 visa? he's 17 y/o currently in the high school.

You can not petition your brother until you are a US citizen. Your parents cant petition for him without a green card. Your brother is not eligible...

How long after biometrics appointment will we receive the Permanent Residence card ?

Agree with my colleagues and add that prior to issuance of new card you and your spouse may be called in for interview.

Can I Travel or live anywhere inside the USA If I Successfully get a F4 visa ?

When you first enter on immigrant visa five them the address you want card mailed to. Plans change it is not imperative you live at same address...

IMMIGRATION?

Overstay not an issue since she is married to you. Need to file adjustment of status packet asap. Preferably before 2/24/2020 to avoid new public...

How long does it take the b2- F1 visa change of status to be approved?

No guarantees. If immigration feels you wanted to be a student before you came on tourist visa and used tourist visa because it was quicker they...

Go online to IRS.GOV and male an appointment to go to your local IRS office.

My N400 is taken so long what i shoud do ?

VAWA has nothing to do with your citizenship application. If you filed in November 2019 you have several more months to go. Check processing times ...

Does Biometric appointment means the confirmation about reentry permit? Or they cannot give reentry permit after that?

Agree with ny. Colleague. If they dont approve and you are abroad you have to come back before spending a year abroad.

Leaving the US is never an issue ita coming back. You should tale your disposition to a competent immigration lawyer to discuss.