SSC CGL does not have fixed qualifying marks — the cut-off is decided after each exam.
Cut-offs depend on the number of vacancies, the difficulty of the paper and the number of candidates.
Separate cut-offs are announced for each stage and for UR, OBC, SC, ST and EWS categories.
You must also clear the cut-off for your stage to move ahead in the process.
Check the official SSC result write-up PDF for the exact cut-off of your year and category.