Hello student I'm sorry to inform you but no you're not eligible for jobs in ISRO with BSc you must passed BE/B.tech or equivalent qualification in first class with minimum of 65 percent marks aggregate from a recognized university.

For more details refer to the link mentioned below - https://www.isro.gov.in/sites/default/files/frequently_asked_questions_and_answers_cepo_2019.pdf

Feel free to comment if you've any doubt

Good luck