How does working for a company started by U.S. citizen wife, while on H1 visa for another company affect husband ?

If the adjustment is going to be on the basis of that marriage, it does not affect. IF it is not, it is unlawful employment and as such could limit...

You should not count the same person twice in two different categories.

Does the us embassy only accept tax returns transcript ?

It depends on the consulate. You should contact them with this quesiton.

Would I get arrested ?

This is a criminal defense question. I changed the practice area for you.

How long before I get EAD after biometrics in vawa case?

EAd based on stand alone I 360 is not issued until after I 360 is approved. No I 765 is needed.

I am us citizen and want to sponsor for my married son who is also have children.

You can do that, the form is I 130. It is a petition that will take over a decade to see the light.

You need to file I 485J for the employer you plan to work for once you have your GC issued.

How to get two petitions for H1B visa approved?

Each petition is indeed processed on its own merit.

I-751 Check is still not cashed after a week?

USCIS takes some time on processing I 751 receipts. You just should be patient.

Which box do I need to choose on form I765 I'm order to renew my current EAD?

You are asking for permission to accept employment in a new category c9.