I took science stream in my 11th and 12th classes, i scored average marks in them, so should i quit science stream now?

Depends on your interests..11th and 12th are the toughest classes in higher secondary education, so scoring average in them in my opinion shouldn't discourage you to quit the subjects forever...and marks don't always necessarily measure your interests and talent, so if you are keen to take the subj

If you're creative, you can also consider going for Design and Animation. However, you must first check if you're suited for Animation. Animation is an art form and a very demanding career. It has ample opportunities for the creatively talented people. Typically you should have good sketching skill