Dear Student,

Yes, 91% is the good score but remember that you haven't written anything for this score same as other so other student also may got the same type percentage so it will not be much useful if you want to take admission in any college through merit based. Moreover you need to sit in the entrance exam if you want any good college or good job where the need of percentage is negligible, you just need to fulfill the basic criteria only, like for IIT you need minimum 75% (no percentage criteria for this year) and if you apply for the job in any sector the minimum 60% is enough, so you see there is not much use of high percentage in maximum field. Still you will get some top college with good percentage like DU, BITS, VIT, Thapar etc.

Good Luck :)