Hey.

The cut off for admission in Indira Gandhi Medical College, Shimla under the All India quota for the previous year  for various categories was as given below-

General- 2842 583

SC- 9777 539

ST- 53544 434 

For admission under the State quota-

General- 12,066 545

SC- 36,850 474

ST- 48,332 450 

Hence you would require a score around this range for a fair chance of admission here.

Best of luck