It would be tough to tell you the exact, Based on this score NEET 2018 you might have the chance to get a seat in the private colleges management quota seats & deemed universities but the chances are less to get top private colleges in Karnataka, You can register MBBS Companion to check what all MBBS/BDS colleges you might get based on your expected rank: https://www.careers360.com/mbbs-companion/order-summary/platinum?icn=Platinum_order_details&ici=qna-answer

Good Luck!