First of all congratulations, see for 64% i might say your options are limited in Science but you still have pretty decent chances, choose your college depending upon what you're trying to pursue after 12th.There are some colleges who take in admission on integrated basis as 10th is where one need to start thinking about his future now first fill your counselling form, you'll surely get college alotted to you as per your score.If you're planning to prepare for competitive exams it's better to take colleges who are integrated.

Goodluck for your future!