Hello dear student,
It really depends if you have been promoted to class 12th this year or you have already given the 12th boards exams. If you have given the 12th boards then surely you can apply for it while if you will pass class 12th in year 2021 then I am sorry to tell you, but you cannot apply for this session. You will apply in the next year only as you will pass your class 12th and take admission in the college.
I hope this was understandable