How long does it take to see rich results and featured snippets after I have published schema?
Before Google can crawl your website and pick out your website and display it as a rich result, courtesy schemas, you first need to check whether your schemas are deployed efficiently and even carry out a rich result test to see how your content could possibly be displayed on search. You can check the schemas deployed by entering the webpage URL on Google’s Structured Data Testing Tool (SDTT) and carry out the Rich result test using Google’s Rich Result Test tool.
Your content wrapped with relevant schemas will take few days to a month to seen as a rich result on search, depending on how often Google crawls your website.