I 730?

You can not withdraw an application that was already denied and not pending any more.

Do I need I-864A for the spouse of Joint sponser?

She can do I-864 without I-864A and without his income.

Immigration case denied?

Now that the I-140 has been denied the I-485 has no basis. What is yiur current mon-immigrant status here and when does it expire?

Can I sponsor my mother to travel to Mexico if she is undocumented and is in the U.S.?

If your mother leaves the US she will be barred from reentry for 10 years. I would not recommend a trip.

Citizenship?

Yes - but they will not adjudicate natz until I-751 is approved.

I have to work abroad for 16 months on an international tour as a performer and I’m a LPR. Can I apply for re-entry Permit?

The purpose for the reentry permit is for stays of 1-2 years. You should apply and not worry about length of trip being a reason to be denied.

When can i do the process with NVC?

NVC will be sending you instructions and the NVC case number shortly.

I would say you in status til 9/7/20 and need to file for extension, if eligible l, prior to 9/7, using the info as to I-94 from your I-797.

Can someone help me with a status adjust Immigration process ?

There are many forms and requirements for the Adjustment of Status process. A competent Immigration Lawyer ensures proper filing, monitors caee...

Will I be able to file file I-864 on behalf of my wife beneficiary from abroad as an LPR?

You cAn if you maintain US Domicile. Are you fiking taxes in US. Do you have lease/mortgage in US? Do you have US Bank account? Job? Etc.