The short answer is yes but with some extra effort and following the right path. Here's a clear breakdown of how you can achieve this even if you didn't study the science stream in school.
To begin a career as a commercial pilot in India, you generally need to meet a few core requirements: completion of Class 12th, passing the medical fitness tests and joining a flying school authorised by Directorate General of Civil Aviation (DGCA). One of the traditional prerequisites has been that your Class 12th include Physics & Mathematics (PCM), which inherently meant a science stream.
If you come from an Arts or Commerce background (i.e. without PCM in Class 12th) here's how you can still pursue the goal of becoming a commercial pilot:
Complete Class 12th (in any stream).
Clear Physics and Mathematics through a recognised open board or as a private candidate (for example via National Institute of Open Schooling or another board). This makes your credentials meet the technical subject requirements.
Pass the medical tests (DGCA Class 2 initially and for Commercial Pilot Licence (CPL) you'll need Class 1). Your health and fitness are critical.
Enroll in a DGCA approved flying school complete the ground training and required flying hours then appear for the exam to get your CPL. Once medically fit and qualified you can apply for airline pilot jobs.
While studying science from the start does give you a smoother beginning (because you'll already have Physics & Maths) not having done so doesn't mean you're barred. The key is meeting the subject requirements and being mentally prepared for the technical aspects of pilot training. With proper preparation you can confidently say How can I become a commercial pilot Even without science background and move forward with the steps above.
If your dream is to fly don't let your school stream hold you back. Focus on completing any missing prerequisites stay disciplined clear the medical and flying training requirements and you're on your way. Yes you can become a commercial pilot without a science background, provided you take the right path.