Hey mrunal! 

The 25th percentile new sat score is 1460 and the 75th percentile sat score is 1590.

In other words a 1460 places you below average while a 1590 will move you up to above average. There is no absolute sat requirement at Harvard but they want to see at least a 1460 to have a chance at being considered. 

Wish you all the best!