If your CUET score is between 400–500 and you belong to the general category, getting admission to top central universities for B.Sc Agriculture might be a bit difficult, but there are still many good government colleges (state or deemed universities) where you can try. Some colleges don't depend solely on CUET and have their own entrance or merit process. Here are a few suggestions for you:

You can consider applying to:

Dr. Rajendra Prasad Central Agricultural University, Pusa (RPCAU), Bihar – accepts ICAR AIEEA or CUET, and has slightly flexible cutoffs for general category.

Acharya N.G. Ranga Agricultural University (ANGRAU), Andhra Pradesh – state-level admission through AP EAMCET, not CUET.

Indira Gandhi Krishi Vishwavidyalaya (IGKV), Chhattisgarh – conducts its own entrance exam or considers state board merit.

Bihar Agricultural University (BAU), Sabour – offers admissions through BCECE exam, not CUET.

Orissa University of Agriculture and Technology (OUAT), Bhubaneswar – conducts OUAT entrance exam, and your CUET score is not needed.

Mahatma Phule Krishi Vidyapeeth (MPKV), Rahuri, Maharashtra – admits through MHT-CET and not CUET, and it is a well-reputed government agri university.

Tamil Nadu Agricultural University (TNAU), Coimbatore – based on Class 12 marks and TNAU counseling, not CUET.

If your CUET score is low, focus more on state-level agricultural universities or ICAR-affiliated ones which allow other admission criteria.

website:
https://icar.nta.nic.in/
https://www.pusavarsity.org.in/
https://www.tnau.ac.in/