Do some body need I-539 b2 bridge while changing from G4 to F1 ?

Yes. Make sure to maintain your current status until you have been granted the new status.

When can I apply?

The first year counts as LPR status. You may apply 4 years and 9 months from the date on your green card.

I-485 from DACA based on marriage?

I suggest you file a FOIA with the USCIS requesting your complete A file and file a FOIA with Border Patrol. What can be done in your situation...

Can I Apply L2 and EAD at the same time?

Yes. You can continue to work as long as our current EAD is valid while your new application is pending.

Your SSN never changes. Even if it was initially not valid for employment purposes. If you are now authorized to work you need to have the cards...

How to change my current J1 Visa to F1 Visa by August 2020?

I agree with my colleague and suggest you consult with an experienced immigration attorney regarding your personal situation.

What is the current immigration status of a person who filed Appleal to Board of Immigration Appeals for Asylum Denial?

No. they asylum application is not pending it has been denied. Tachnically the person has no status.

How can I get records of a person?

You can file a FOIA request but if she was brought into the country without a visa there may be no record.

This is not an immigration question. Speak with a tax attorney.

Do the abuser have to be citizen or permanent resident at the time of abuse or it can be at the time of filing to qualify VAWA?

You may file for VAWA if the abuse was from a person in the united State legally. Read the instructions and qualifications carefully.