UPSC or the civil services (including being a judge) comes much karte. Since you have completed class 12, you should now proceed for a graduation degree like BA, BBA, LLB in your desired stream and subjects and parallely prepare for UPSC exam for civil services and Judicial Exam for being a judge.

Given your good percentage it won't be difficult to get admission in a decent college. 

Plus according to me an IAS or IPS etc (through UPSC) are much more prestigious occupations than of a judge, but it all depends on your interests. No occupation is beneath another, all are equal and both these are very reputable and dignified positions.