How do I prepare for this case?

Do you have an immigration question? This seems to be a family law question.

Do I need my passport at the immigration interview?

every time I accompanied a client to the interview the officer had asked to see the passport. So ...

Hello. My F-1 reinstatement I-539 was denied because of my school and home address was changed.

Just reapplying after denial does not change anything. You should seek expert help for better results.

PWD for green card is very different from the H1B wages.

I was denied the first time for the reason I failed to provide proper filing fee and missed to give some information.

if the adverse determination information is asked on the form, you are required to provide it.

Should my husband leave the US while we apply for permanent residency for him if his B1/B2 Visa will expire soon?

It would be a good idea to talk to an experienced immigration lawyer for help in your situation. Best Wishes!

My green card got taken away and I need some help.

You should no have stayed away from U.S. for over a year. This gets complicated now and you need to talk to an experienced immigration lawyer for...

Should my husband leave the US while we apply for permanent residency for him if his Visa will expire soon?

You and your husband can benefit from legal advice.

My new H1B employer wants to file H4 only after my H1B is approved ( I have an RFE) .. Is this possible w/o going out of status?

Yes, You can independently apply for H4 for dependents.

My h1b transfer was denied I was thinking to go back to my previous employer can I go with them?

H1 is not in status after termination. You should seek specific legal advice immediately.