Plz tell my chances

Hi I am Srinivas from India. I want to get into one of the top 20 bschools in the U.S. I have written the GMAT twice. First time I got 600 and AWA 5.0. Second time I got 700 and same AWA. Now my problem is I am a fresher. I have absolutely no work experience. And I have a percentage of 62.5%. Almost...