Hie Shrey,

The final answer key of KVPY is expected to be released within this week. Earlier the provisional answer key was released which could be claimed till November 15, 2018. You can stay updated for all latest updates by following the KVPY Answer Key 2018 article for all the latest updates. 

Good Luck!

Hiii

The official provisional answer key has already been released and the final key will be released soon by the end of the week hopefully. To check your score you can refer to the provisional answer key and incase of discripency you have to inform the officials. I am providing a link for more details.
https://school.careers360.com/articles/kvpy-answer-key

Hope this helps.
Thanks!