Not clearing or not wanting NEET does not close the door for science students. There are many strong, high potential courses after 12th science that have nothing to do with the medical entrance.
For PCM students, engineering is the obvious big field, entered through JEE or state exams, with branches like computer science, mechanical, civil, and electrical. Beyond engineering, there is BSc in fields like computer science, mathematics, physics, and data science, along with BCA for a direct software route.
Architecture, entered through NATA, and design, entered through exams like UCEED and NID, are excellent options for creative science students. Merchant navy and marine engineering are high paying paths that most students never hear about.
For PCB students who do not want NEET, there is a whole world beyond medicine. BSc in biology, biotechnology, microbiology, biochemistry, and environmental science leads into research and healthcare linked careers. Nursing, pharmacy, physiotherapy, and allied health sciences are strong, in demand fields that do not require NEET for many programmes.
Science students can also move into completely different directions. Data science and analytics, one of the fastest growing fields, is open to science students. Careers in psychology, economics, law through a BA LLB, and even design and management are all reachable.
The important point is that a science background keeps your options unusually wide. NEET is just one door, not the only one. Look honestly at what you enjoy, whether it is building things, working with data, research, design, or business, and pick the course that matches. Science students who choose based on genuine interest, rather than pressure, tend to build the strongest careers.