Best to consult with an attorney to review your U visa case and determine next best steps.

Indicate the filed tax return in the appropriate section of the form.

List this address even though your parents no longer reside there.

You may indicate yes if you will have vaccination record at time of interview.

This wouldn’t impact your case but you may be eligible for other forms of relief.

Withdraw the application and report the fraud.

Best to consult with an attorney to review your specific history to determine best options available.

Yes if your priority date is current you may file for I485.

Yes you must resubmit all evidence for separate I485 filing.

Yes you may do so if country is not under Covid restrictions.