How to get into top MBA schools through GMAT?

MBA
1

This is my qualification:BE(Mumbai University) 62%HSC 81%SSC 87%Currently working in Banking industry since Nov. 2012. How much should I score in GMAT to get into the TOP 20 B-Schools? Target : Wharton, HBS, Stanford, LSB, ISB

2

This is my qualification:

BE(Mumbai University) 62%
HSC 81%
SSC 87%
Currently working in Banking industry since Nov. 2012.

How much should I score in GMAT to get into the TOP 20 B-Schools?
Target : Wharton, HBS, Stanford, LSB, ISB