I filled my I 751 march 17

If you filed a joint petition, it appears that you filed it about 10 days too early.

If an attorney tells me that my husband can apply for an adjustment of status after Daca am I being scammed?

Approval of DACA, alone, does not constitute an "admission" for purposes of adjustment of status.

Amendment to new project denied , h1B i94 valid till year end . Can I continue working on old petition , change employer ?

You had better speak to the company's immigration attorney right away.

I am getting married in August '14 and my fiance is in India right now.

This is a duplicate inquiry. Please see the previous responses.

Hi my wife applied for my I-485 but on basis of my previous J1 home residency short for 1 month, they gave us more time.

That could be a processing error. USCIS generally does not change A Numbers.

Currently in H1B. Filed I485 for approved I140 (EB1A)(spouse), Loosing my job, do I need to move to H4B (spouse has h1B) or wait

You may change your status to H-4, which may become moot if the I-485 is granted.

Mother filing for me to become a resident

You will not obtain any legal status solely by virtue of the second-preference visa petition filing. Consult with an immigration attorney.

That should not be a problem in a naturalization application.

Can i leave my H1b job before getting married to US citizen as my spouse is in different state.

You could. You may be in an unauthorized status, however, during the period after you quit your job and before you file for your adjustment of...

H4 to H1B with Consular Processing

She can only change status if she is already in the US in some other status and subsequently files to change to another nonimmigrant classification.