Hi Aspirant 

If you are looking for a seat rather than just qualifying trust me your rank should be good enough.There are all total 807  seats in India including all AIIMS across India.There are 64 seats reserved for ST students its means you have to score all india rank in ST category nearly 60-70.there are 5% seats available of Physically handicaped students.It means 7 seats for st physical handicapped students.Accordingly you have to score.Exact score in unpredictable .So you can check here the previous year cutoff and expect almost the same.There may be up and downs.

Https://medicine.careers360.com/articles/aiims-mbbs-cut-off

All the best

Hi there

Predicting safe scores is difficult as cut offs vary every year depending on a lot of factors like number of candidates writing the exam and difficulty level of paper. 
Still, looking at the previous years cut off might give you an idea of the safe score you need to score. 
Here's the link to it:

https://medicine.careers360.com/articles/aiims-mbbs-cut-off

The above link mentions the AIIMS cut off of different categories of previous years.

Hope this helps.

Hey.

The cut off marks for admission In AIIMS delhi was a rank of   2090 and a percentile of  99.4468163 for the ST category in 2019 the cut off in 2017 was a rank of 4478 and percentile of 98.4429374.

Best of luck