In order to access the previous year's question papers of CUET PG History, you can buy guidebooks from Amazon and Flipkart. They provide you with previous year's question papers and even practice papers. Good Publisher's from whom you can buy are Arihant, Pearson's, Gupta, etc.

Or you can access them from the internet and download them.

Some websites are - http://ndl.iitkgp.ac.in/cd_document/cuetpg/his

https://www.adda247.com/teaching-jobs-exam/cuet-previous-year-question-papers/

Hope they help