Hi Rakshit

Congratulations for passing your board examination if you have less than 60% marks in board exam Do not get worried if you are  interested is in computer science then you take the admission in engineering college As far as placement concern these is criteria kept only by Service based company like tcs,cts and many more but if you aim is to get job in Google, Microsoft then you only need skill set not percentage if you do not have a degree but know the skill then you can easily land in to these companies so do get worry work hard and improve. you skill .

Hope above information is useful for you

Good luck