Assuming you are asking for which stream you should go for so if you are interested in Engineering then better to take SX Maths stream as this would be helpful for you in future as KVPY is considered for the admission of B.Tech/B.E/BS  in few colleges like IISER, IIIT Hyderabad etc apart from the scholarship.

For further information about KVPY, you can go through the below link -

All about KVPY

Hope this helps!!!