Im getting married with a usa citzen and im ilegal here how long does it take to fix my papers

The answer to your questions will depend upon how you entered the country. If you were admitted or paroled into the United States, the process will take about 6-8 months. While your request is pending, USCIS may issue advance parole that authorizes you to return after a trip overseas. This is typically issued with 90 days. If you were not admitted or paroled, the process could take 1.5 to 2 years. You will not be issued advance parole. You will need to seek an immigrant visa through consular processing. You may qualify for the provisional waiver.  You can read more about family immigration at http://myattorneyusa.com/family-immigration.