How long it takes to receive by mail, my Green card after the interview (Atlanta) ?

If your green card was approved between 2 to 4 weeks.

Do I qualify for I-601 Waiver?

It does not sound like she qualifies for a waiver. Her best option maybe to wait for the 10 years to elapse. Consult an attorney.

How do i help my illegal (future) husband become a legal US resident?

I agree with my colleagues. He will need a waiver that shows extreme hardship. It is best to consult an attorney.

How long it will take to get prove i-130?

It can take a while for your I-130 to be approved as you are a green card holder. All you can do is be patient.

Can i do anything for administrative processing?

Unfortunately all you can do is wait and contact them every 30 days.

Creating a business with my US fiancee for K-1 visa

I agree with my colleague. The best option would be for your fiance to obtain a co-sponsor for you.

My Fiancé is in USA on GREEN CARD. How can I go there because with or without her support. thanks AHMAD

Your fiance can file an I-130 petition for you but you will have to wait for a green card number to become available. It is best to consult an...

What if I found proof in writing that my husband just used me to get his green card?

If you divorce him, he may still be eligible for the 10 year green card. There are waivers to the joint filing requirement.

It sounds like they did not receive the affidavit of relationship. Your mother may need to resend it. It is best to consult an immigration attorney.

H1 and H4 Extension filing

Generally if you obtain the H1-B then you will no longer be eligible for the H-4. I hope the employer's immigration attorney is responding to the RFE.