You can use 6 headings in HTML structure, ranging from "H1" to "H6". H1 is the highest level heading and H6 is the lowest level heading.
In HTML, there are six different headings that you can use, ranging from
<h1> represents the most important heading and
<h6> represents the least important. It is recommended to use only one
<h1> heading per page, and then subheadings as necessary using
<h3>, and so on.