So my i130 is approved? I don't see any update on USCIS website!

USCIS hardly updates the website. So, do trust it!

What to do?

Do not worry as your issue is fixable. You can contact them and let them know the situation or consult with an immigration attorney if you want to...

How to get replacement of I-94

Duplicate question. You will get the same answer.

How can I change my status from a b1/b2 visa to a work visa ?

You cannot do much in this case as your employer needs to petition for you. You can talk with company's immigration attorney in case they have one....

Since I have obtained a waiver, select "NO" to answer this question?

That is correct. Answer "No" but make sure you will send a copy of your waiver or explain in addendum. Good luck.

Can they apply for F-1 visas even if they're in the US

If you want to proceed, it is best advised to seek help of an immigration attorney.

If you renounce your citizenship, you have to leave the country as you have no legal status.

How do I keep her with me in untied states and her son. Is it still possible? If so what do I need to do.

First step would be to get married. As a US citizen you can petition for your spouse. Good luck.

My question is that , if i leave the US now , then can i return here after some years?

I agree with my colleague and also want to add that be mindful of the country you want to go.

Can .

More details is needed. What felony?