Syed, you will need nothing less than 550 for a seat in King George's BDS. Now this is an approximate score because cut offs change every year and are dependant on various factors such as no.of Candidates appearing for the exam, no.of Candidates qualified, top NEET score and difficulty of the exam. King George's is one of the most reputed and so your target should be nothing less than 550 because you also belong to General Category. For assistance in counselling, please use of MBBS Companion:

https://www.careers360.com/mbbs-companion