B1/b2 extension?

Yes you may apply 90 days prior to I94 expiration.

Wife and 2 kids were just approved for B Visa and are currently in Mexico. I am a permanent resident.?

Your wife and children may enter but not with the intention to adjust status. After a period of 90 days, if their circumstances change, you may...

Yes you may do so as the applicant of the I485.

Contact USCIS directly about case status or engage with an attorney to understand your case and request possible expediting (unlikely but an option).

Unclear but your husbands biometrics may have been previously captured so are not needed.

Hi my case is pending for two years i-485 family based adjustment statues?

This is well outside of normal processing. Best to consult with an attorney for guidance with contact to USCIS.

A few question?

An expungement does not cure the underlying criminal record. That will impact your case. Best to have an attorney review your record prior to filing.

Can i adjust status under CAA if im granted TPS?

With a final order of removal, you will need to file a motion to reopen with the immigration court to proceed. Consult with an attorney for guidance.

B1/b2 extension?

No, not if she departs prior to decision being made.

Yes it may be better to wait until second I751 interview before applying for N400 and possibly losing the government fee. Consult with an attorney...