Hey Nupur, 

Firstly, to get admission in IIM Indore or any IIM you need to have a Bachelors Degree. The score of you bachelor degree with atleast 50% marks or an equivalent CGPA. Then you need to appear for CAT/GMAT examinations to get selected into an IIM. After this process, they conduct a personal interview who have a valied CAT/GMAT score.