Form I-539?

Once you leave the change of status is abandoned. You must have a valid B-1 visa to return, which will probably be difficult to obtain.

Second Year Day 1 CPT to H4 EAD?

We don't have nearly enough information, especially about the H-1 spouse.

Can I have my own online business (retail store) when I am in H1 and can I also work for an IT company at the same time

Unfortunately, you are only allowed to work for the H-1 petitioning company, and not your own business. You will need to get your permanent...

Canadian employer can send Canadian citizen to US on TN visa?

Yes, it is possible as long as the employee qualifies in one of the TN categories and will be an employee of the US entity regardless of which...

How to change status from H1B to H4 with consulate appointment?

First, it is called getting a visa, not stamping. Second, there is no reason to travel during a pandemic when you can just change status in the US....

Can H1 & H4 travel with previous company Visa stamping on passport along with valid new company i797 - H1 Copy ?

You do not need a new visa but you should talk to the immigration attorney being paid to represent you and your family.

I just got my EB1C petition approved.

You should discuss this with the immigration attorney who is being paid to represent you. Going through consular processing is a bad idea, by the...

I am on J2 visa with valid EAD and Currently working in an organization. I want to start a sole proprietorship online business.

The J-1 EAD is "open market" work authorization so you can work however you wish.

Can I receive Social Security if the father was deported and allowed back in the US?

Go to the closest SSA office and he can show his legal status and get a new card with the old number.

Yes, you can but see my last response to you. That is a much better option.