Can I apply for naturalization while my I 90 is pending?

Yes you can file N-400 if you otherwise qualify.

Can it be a problem - yes - if Immigration determines that either marriage was for immigration purposes and not love - this fraud will prevent the...

Only if it is a combo card and serves as a Ead and I-512 Advance Parole

Agree with my colleague. Another option is to hire a competent lawyer to file a mandamus action in Federal Court.

Can i apply for a fiancee visa due to my i-130 denied?

File an I-130 again and then have your husband apply forna K3 visa.

Is there any way to speed up getting a passport?

You should have paid the extra fee and done the expedited process. Now only option is as my colleague suggested. Call the US Passport office on...

Can my sister apply for a tourist visa and not declare her pending I 130 ?

Never good to lie. Can always come up later

Green card interview on EB3 in may 1 ?

They have 120 days to make decision. If they dont you can bring a mandamus action in Federal Court

Is there a limit on how many times i can renew my Green Card?

You can keep renewing it indefinitely. It is a money making operation for USCIS - your permanent residence is good forever its the card that expires.

F-1 visa and recently married

Are you a US Citizen? If so, he can still have his adjustment of status approved even if he quota school. As part of the Adjustment of Status...