Hey,

Based on previous year data, with 510 marks you may get a rank between 92665-101137. You can also predict your rank using NEET Rank Predictor

Last year the cut off marks for Army College of Medical Sciences, Delhi under your category was around 550. So based on this it is quite difficult for you to get a seat here. But keep in mind that nothing fixed can be said until NEET Results come out. Cut off and ranks vary every year depending on the difficulty level of the paper, the performance of the students and the number of seats available.