The CUET is a national-level entrance exam in India used for admission to undergraduate programs in various universities. To find the best science colleges through CUET exams, One needs to consider several factors such as the university's overall ranking, reputation in science and technology, and the specific programs they offer.

As per NIRF Ranking, some of the highly regarded universities for science programs in India that accept CUET scores include:

1. University of Delhi (DU) - Known for its prestigious science departments, including the Delhi College of Arts and Commerce (DCAC) and St. Stephen's College, which offer strong programs in various science disciplines.
2. Jawaharlal Nehru University (JNU) - Renowned for its School of Environmental Sciences and School of Physical Sciences, JNU offers a robust curriculum in the sciences.
3. Banaras Hindu University (BHU) - BHU's Faculty of Science is well-regarded, offering diverse science programs with strong research opportunities.
4. University of Hyderabad (UOH) - UOH is known for its research-oriented approach and quality education in science disciplines.
5. Jamia Millia Islamia (JMI) - Offers a range of science programs and has a good reputation for research and faculty quality.

This information is given based on NIRF ranking. For the latest and updated information, including specific rankings and program details, refer to the official CUET website or the individual university's admissions portal. 

Source: https://www.nirfindia.org