Hi Pooja,
A lot of students are opting for forensic science these days so it's a really good choice. Usually the minimum eligibility for Master's program is to have a bachelor's degree in forensic science with an aggregate of minimum 50%. Also universities have entrance exams to test their students in basic knowledge and skills. Also which university are you interested in? And many universities have online admissions. If you need anything else do revert back.
Good luck