Hello Kavya, 

CUCET is a national level examination which is regulated by ten central universities jointly. It is a combined entrance test organized for providing admission into various UG, PG & other courses offered by the central universities across India. 

You can go through this link if you want to know more about the exam :

https://www.careers360.com/exams/cucet

If you are searching for caching centres then you must find it in your hometown like it's physics centre, guru chemistry or you also join separate tuitions from different teaches as well.

I hope your doubt was cleared. 

Hello,
.
Where are you from?
If you would have mentioned your state i would have helped you with some of the best coaching classes near you.
.
Mostly every state or city will have coaching classes.
Like some of the coaching classes in all over India are,
.
b.kumars academy
Indian institute of technology
Central University of Jammu
Central University of Rajasthan
.
These are some of the best coaching institutes in India.As i cannot see much coaching centres, mostly Colleges are itself providing classes for CUCET.
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If you can mention your State i will sure help you out with relevant information.
.
Thank you