Admin->Configuration->General Setting->SEO

SEO funciton meta tag and description for the website is not updating in google from nop commerce.

it will take some time for reindexing at the google search engine. it may take more then one week
ref: https://www.quora.com/How-long-does-it-take-for-Google-to-index-a-website

Well, i have been waitng more than a week. And i also did google search console to verified our sites and perform google crawling but still the problem is still.