Schema is a type of microdata that makes it easier for search engines to parse and interpret the information on your web pages more effectively so they can serve relevant results to users based on search queries.
Including schema microdata in your HTML code can help search engine crawlers interpret the content of your pages more effectively. This, in turn, can increase your visibility. However, it’s important to note that including schema (or any other structured markup format) in your code is not a quick and dirty SEO “hack” – instead, think of schema as a best practice to make it easier for search engines to find and display your content.