To apply for CUET it is not necessary to have obc non creamy layer certificate general category candidates can also apply for the same. reservation is given to those students who are financially weak to support them for education.in order to qualify for obc  category candidates parents' annual income should be less than Rs. 8 lakhs. Salary and agricultural income are not to be considered as income for calculating annual income for creamy layer status.

Further, CUET is a entry to your dream college so prepare well for the exam.to understand the exam you need to know the syllabus providing below

https://www.google.com/amp/s/university.careers360.com/articles/cucet-sample-papers/amp

Good luck!!