what is schema and how to create for wordpress website?

Schema markup is a special type of HTML code that you can add to your WordPress website to tell search engines more about your content. For instance, you can tell the search engines that a particular page is a blog post, a recipe, FAQ, news article, or product page in your online store

Schema markup is a special type of HTML code that you can add to your WordPress website to tell search engines more about your content. For instance, you can tell the search engines that a particular page is a blog post, a recipe, FAQ, news article, or product page in your online store.
For the Wordpress website , Here is the steps
https://kinsta.com/blog/schema-markup-wordpress/

Schema is a code snippet that sets the page's HTML to structure, organize, and display data (your website content) so that search engines can find and read them easily.

If your website has no Schema while it has abundant and messy information, search engines cannot filter out what information is essential. Once Schema is available, search engines can read and understand your website content more clearly. As such, it will understand this page like a product page, and what product type is, which manufacturer is, then may display that information on the search engine results page (SERP).

Step 1: Enable Custom Fields. From your WordPress Dashboard, access the page or post you intend to add Schema to. Step 2: Generate Your Code. You can create your Schema markup code via Google's Structured Data Markup Helper.
Step 3: Insert the Code.
Step 4: Update Your Header File.

How to Add Schema Manually
Step 1: Enable Custom Fields. From your WordPress Dashboard, access the page or post you intend to add Schema to.
Step 2: Generate Your Code. You can create your Schema markup code via Google's Structured Data Markup Helper.
Step 3: Insert the Code.
Step 4: Update Your Header File.

Schema markup is behind-the-scenes code on your WordPress site. Humans won't ever see it, but search engines like Google use it to better understand your content and add visual elements called rich results, which look like this: Stars aren't the only rich results you'll see, either.

Step 1: Enable Custom Fields. From your WordPress Dashboard, access the page or post you intend to add Schema to. ...
Step 2: Generate Your Code. You can create your Schema markup code via Google's Structured Data Markup Helper. ...
Step 3: Insert the Code. ...
Step 4: Update Your Header File.