CA

If you have commerce and maths then you have got an upper hand to apply for CA exams.
It takes almost 5 years to become a CA in India and one should prepare themselves for the challenges and commitment ahead.
Three levels to become a full-fledged CA are:
Clearing CPT (common proficiency test)
Eligibility for CPT is that you have to register after 10th but you'll be allowed to appear after HS commerce student needs aggregate 55% marks to appear in CPT.
After CPT exams, comes IPCC:
You need to score a minimum of 100/200 marks in your CPT to be eligible for IPCC. Register nine months earlier than the exam month. To pass IPCC, you need to score aggregate 50% marks in each of the seven subjects. Bear it in mind that it's really tough to clear. If you manage to clear this test then you'll need an internship under a CA where you could gain practical knowledge as well as experience. During the internship, you can sit for the final exams for CA course, clearing which you can work as a designated chartered accountant.
The fundamental criteria for pursuing CA is consistency and patience. You need to Master subjects like maths and accounts. Prepare well as the levels and courses of exams aren't easy. If you need consistent guidance and mentorship in maths from the experts then try online math tutoring:
https://tutstu.com/tutors/Math/sub/18/