I want to quit my job, and start a business in the US, and stay in the US after I quit.

An open-ended question like yours requires a full consultation. You should sit down with an immigration attorney and discuss options one-on-one.

Can a person re enter the United States under an advanced parole...( an immigrant here for more than 180 days marry to a citizen

If you overstayed beyond 180 days, you should not travel despite being issued advance parole.

H1 VISA - Transfer and legal work date.

In this case, it is not a transfer. To transfer you first have to be in H-1b status.

Does H1 extension by two companies affect green card process?

H-1Bs by two companies is not an issue. However you will not be able to use the old priority date unless the I-140 is approved.

Perm Denied and appealed (motion to reopen), chances of approval?

The random audit is understandable, but a denial is not. DOL stated the reasons for denial. Chances of approval depend on the reasons of denial...

Two H1b Approvals Current status - OPT/STEM

1) You don't file. Your employer does and they will make the decision 2) The employer's attorney will figure this out

H1b Receipt question

1) Not necessarily 2) Probably considering the $124K petitions received by the Department.

Selected as the best answer

F2 advise - My bf and I are together for 10 yrs. I hv been admitted to a B-school and would be traveling to US soon.

You question is way too complicated to get a meaningful response on Avvo. It is best to approach a good immigration attorney and have a one-on-one...

Applying for EAD (employment authorization card)

Yes

Is it possible for you to get your 10 year green card if you are divorce

Check the processing time on the USCIS website. I-751 are not a priority and it takes over 6-9 months for adjudication. If it is beyond processing...