my score in neet is 498 but in choice available they have given only 2 clg in karnataka remaining all delhi. and they show only50 choice

The systems internally retrieve the credentials of the candidate like gender, category, sub-category, date of birth, and eligibility remarks from the candidate’s database and the available choices specific to the candidate based on his/her credentials are displayed.There must be one option also of state wise college selection, please check if you have selected any particular state.
If you think it’s not showing result as per your details, you can write to MCC at adgme@nic.in or call their helpline number.

Hope this helps!!!