Hello Dear,

As per the last cutt off of Aims which was 98.833 for general category and 97.011 for Obc category and 93.65 for sc/st category 

I think to be secure you need to score 100-110 because it depends on quality and intensity of exam paper if its tough than cut off can be around 100 and if its easy and moderate level cut off can up to 100 or above.

So do hard work and aim to achieve 100+ 

Good luck!