When can we start DS-260 application for DV2021?

You forgot to tell us your 2021 DV number. Also, DV 2021 greencards can not be issued before October 1, 2020. Consider a private consultation...

Yes, each human being needs their own I-130. Don't file too quickly ... talk to an attorney about the 2-year conditional rule.

You're on the wrong 'research path' by focusing on the Appendix A ... the key is in the job description. In the vast majority of cases Software...

Green card missing from mailbox, do I re-file i-751 or i-90?

If you have the 797, I would file the I-90 ... WITH FEE.

We applied I 130 for my wife adopted mother denied

Why was it denied? Was your wife over 16 when she was adopted? Did she live with her adopted mother for more than 2 years?

When the visa interview is going to start in India mumbai ?

No one can predict precisely when this will happen. Check the Consulate website frequently.

E-2 visa holder traveled and got stuck in Schengen before Pres. Proclmtn. on travel. Am I allowed back into the U.S.?

Have you tried to contact CBP directly? https://www.cbp.gov/ Or the airlines might be informative.

Is there a waiver for an out of status applicant when it comes to eb5 ?

As Mr. Shusterman stated, there is only the 601 waiver ... assuming that you have a 'qualifying' relative.

Do I’ve to file supplement A to form i 485

Supplement A is only for people claiming to be grandfathered under 245i. Talk to an attorney to make sure you're not making any other mistkes.

Be patient. I wouldn't be surprised if they took more than 6 months.