looking for guiadance on how and what tools to be used from MIP.
There is no OCR functionality in the MIP SDK.
If you are looking for information how to develop this my guess is that first step is to retrieve the images from XProtect, this might be a start: https://doc.developer.milestonesys.com/html/index.html?base=gettingstarted/intro_analytics.html&tree=tree_4.html
If you look for solutions already developed the Marketplace might be the place to go: https://www.milestonesys.com/community/marketplace/start-exploring/