Dear Kokila, you need not apply for NEET Admit card. When the admit card is released from April 15th,  you will have to login at nta.ac.in with your Login credentials. You can download your admit card. Now the admit card has 2 pages and the 1st page has your details. Make sure that he details are the same as you filled them initially in the application form. If any discrepancy, you should reach out to the helpdesk. And the 2nd page has proforma details and it is also important to download the 2nd page as well.