how to find scholorship after 12

There are many colleges that gives you scholarship if you do well in boards or if you're re among top rankers of your college but this many vary from college to college. However you also look for different scholarship schemes introduced by government like if you're from UP then you can apply for UP Scholarship.
You can look for different scholarships, please go through the below given link.

https://www.wemakescholars.com/other/government-of-india/scholarships#
Thank you.
Hope it helps.