i have 324 which college can i get?

With this score, getting any college through all India quota would be very difficult, even if you belong to any reserved categories. Your profile shows that you belong to Tamil Nadu so you can for private medical colleges. Getting government college would be tough as the cutoffs lies above 500 marks. So you can go for private Medical colleges such as

• CMC Vellore through Management quota

And private dental colleges such as

• JKK Nataraja Dental College and Hospital
• Madha Dental college and Hospital
• Tagore Dental College and Hospital

Through Management quota. But keep in mind that these are based on last year's data and this year the cutoffs can change. To get complete list of all colleges you can get based on your rank use this link http://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer