Can i apply for I-539 Visa extension since you can not go and get biometrics done due to Covid-19 ?

Yes - she can and should apply. If she doesnt she will become an overstay if she doesnt leave on time.

If you sign into CEAC system it will serve as contact to extend for a year.

Apply for unemployment. I am not legal in usa?

Unemployment is not welfare. You can apply.

Am I accruing Unlawful presence?

if they dont side with you in the I-485 appeal you are accruing unlawful presence from date of I-485 denial. Who sponsored in the underlying petition?

It can be tried. To do so, they need to file form I-912.

How long does it take USCIS to send electronic verification?

Check with the bank to see if filing fee was cashed. Obtain a copy of the check as once cashed the receipt number is on the bacl.

Can I travel to the Dominican republic with an expired passport from Dominican republic?

No. Apply at consulate general of Dominican republic in NY for new passport if still open now.

Based on your comment one of my colleagues it appears you were married a little over a year and a half and it is a mistake and a I-751 will need to...

If I apply for an immigrant petition for a spouse will it be accepted at the USCIS office or is their office shut down in Corona

Agree with my colleagues and add that whether the offices of USCiS are open or not mail is still accepted. You should work with a competent...

I have a J1 visa and a tourist visa, if my J1 gets canceled can i legally stay on my tourist visa without leaving the states?

You were admitted with a J-1 Visa in J-1 status. You dont automatically switch over to B-2. You would either need to file an I-539 Change of Status...