Travel to my home country b/w H4 to H1 change of status. Is H1 status valid?.

Under the so called 'last action' rule, the H-1B may have been superseded by the H-4. Hence you are in H-4 status. Consult an attorney to explore...

I-130 visa application

There are some complexities to your situation and so you should consult an immigration attorney in person, to discuss your options.

How do i prove I entered the country legally if my last I-94 number is not found in the automatic system?

Go to the nearest CBP office (preferably at the port you entered the USA) and the deferred section will be able to help you out.

Nebraska service center for I-130 spousal visa.

General processing times may be checked out at the USCIS website https://egov.uscis.gov/cris/Dashboard/CaseStatus.do

One may extend an H-1B beyond the maximum permissible 6 years, if the PERM priority date is more than 1 year ago or the I-140 is approved. This...

Selected as the best answer

I am out status from July 23 as reinstatement was denied, but my H1B was approved July 22. Can I stay in USA , start work Oct 1.

YOur situation is best addressed via an in person consultation with an attorney - particularly you need to understand what happens if MTR results...

I 140 RFE Premium process

The site that you access to check case status is not always updated and not always updated promptly either.

Can I work 2 full time jobs on EAD ?

approved EAD allows for multiple employers, in general. You should consult an attorney for your specifics.

H1b cap exempt rule, H1B approved & stamped BUT never travelled/entered US on the H1B visa

A petition is cap exempt if the beneficiary was previously accorded that status and has not used up the 6 years in H/L status.

Any impact on primary applicant H1b status?

There is no impact on either a pending I-485 or H1-B if you work on the basis of the H-1B & your spouse works on the basis of an EAD (I-485 based).