Hii Vandana!
The qualification criteria to become a supreme court judge states that the person should be an India citizen.
He/ she should be a High court judge for atleast five years or of two more such courts in succession.
Or
He/ she must be an advocate of a High court for atleast ten years or two or more such courts in succession.
He/ she must be a distinct jurist in the opinion of President.

Hope this helps.
Good luck!