Hello Anjali,
With 597 marks, your chance to get a seat in KGMU is high through State Quota. Last year (2018), the AIR cut off was 397 which corresponds to a score of approximately 620 marks. This year, we are expecting a rise in the cut offs due to overwhelming competition. States Quota cut offs are lower as compared to All India Quota. Hence, the chances are better for you. However, please not that this is not the absolute dictum and it finally depends on the overall performance of other test takers that determines your percentile. Let's hope for the best.