Hello,

It depends on the institute how much they have kept. You should score near to 60% of total marks atleast. It is good to learn new things and nothing is useless. Please focus on your studies and give maximum effort. it will be helpful. regarding accurate bar you have to ask your senior or faculties. They will let you know the actual marks cutoff and the evaluation process. These things varies from one institute to other institute.

Hope it helps!