Hi,
Do not lose hope. Let the results come out.
But there is good news.
Though, UCEED requires you to get a minimum of 50% Marks in your 12th. There might be major requirements for various courses you are willing to apply which you can check out on their latest brochure available on the UCEED portal.
But, NID does not state as of now, any minimum percentage requirement in the 12th examination, but of course, you have to have passed/cleared the 12th or should be appearing, but should reach the eligibility criteria of passing the 12th in documentation during the stage in the admission process as mentioned.
Wishing you all the Best!