Hi

In general , you should try to get at least 80% in your class 12 board examination.
Actually, how many marks you should score in class 12th board examination depends upon what do you want to do after your 12th

For example,

• If you want to get admission in Delhi University then you should try to get at least 90- 95% in your class 12th board examination.
• if you are going to appear for entrance examinations like NEET you should try to get at least an aggregate of 50% in physics chemistry and Biology
• If you are going to give examinations like JEE and want to get into NIT or IIT , you should try to get at least 75% in your board examination.

Thankyou