Hey Sourav,
Kishore Vaigyanik Protsahan Yojana (KVPY) is a National level scholarship program managed by Indian Institute of Science, Bangalore.
Since you have passed 10th class so you will belong to SA Stream, eligibility criterias for SA stream 2019 are :

• You must be studying in class 11th in the academic year 2019-2020
• You must have scored minimum 80% marks (70% marks for reserved category candidates) in aggregate in Science and Mathematics subjects in class 10th examinations.

Since according to your score you have scored around 59% marks in aggregate in Science and Mathematics subjects. So you are not eligible for giving this exam.
Good Luck!