What i don’t understand is, if i were to apply for the h1b and pay. I will only get a decision from USCIS not the actual visa?

What exactly is your question about? H-1B or Citizenship?

How do I obtain my old I94?

I agree with the colleague's advice above.

At what stage in the green card process for employment EB3 is your tax returns required?

I only see it being required during the adjustment of status.

Challenging circumstances, I filled for I-130 Immediate relative but 10 year ban?

I think this is a repeated requested. You should schedule a consultation with an immigration attorney, some do provide free initial consultations.

When did your husband enter the country? You may go to the local CBP office and they might be able to figure it out.

To be able to opine, we would need a little more specific information. A lot of attorneys provide free initial consultations, you may contact any...

I received my green card in October 2017. However today (3/4/2018) I received a letter from USCIS that my case has been transfer

Really difficult to know without any information about the case.

I agree with my colleagues' opinion.

Currently on H4 EAD. Had H1B with I-140 3 years back. Can I still convert to H1B with the approved I-140 ?

I agree with Mr. Behar's opinion above.

Hi my employer have applied h1b last year. I received second rfe as specialty occupation.

Please let your employer's immigration attorney deal with it. He/she can explain it better.