As you have tagged Indian Army BSC Nursing , For this exam submission of form should had to  be done on or before the 2nd Dec 2019 .

The late applications will not be processed leading to non-generation of admit cards.

You can apply for 2020 exam.

It is sad that you did not apply for B.Sc Army Nursing Exam application, If you miss that, you cannot write the exam. There is no other option for this, Admissions to B.Sc Army Nursing are through this entrance examination only. You have to wait for 1 whole year and apply again in the next year.