SEO experts often don't know anything about coding, however, a basic understanding of HTML is helpful. It will also make you more valuable as an employee. Even if you never have to code in your SEO job, it will give you an advantage over other applicants who haven't bothered to learn any additional skills.
SEP professionals who know HMTL can make small changes to the site they are working on without asking for help. For example, if they want to add H1 and H2 headers to text, SEO professionals can do so comfortably without worrying about messing anything up. If you know basic HTML, you can add and edit meta titles and descriptions yourself if you're not working with a CMS which lets you do this in the control panel.
Nevertheless, SEO isn't about code. It's about creating create content using keywords which will bring in traffic. SEO is also about choosing long-tail keywords that you have a chance of ranking for. If you've mastered keyword strategy and link building tactics, then learn HTML.
Schema markup is one reason SEO professionals may need to know some coding. This can improve how a client's website appears in the search results. The rich snippets provide additional information about a product, person or event. Schema.org offers a great deal of information about how to mark up a site. A basic understanding of coding will help you here.
Free courses for beginners who want to learn HTML are usually free online. You can learn the basics quickly and practice what you've learned. You will end up inadequately prepared for a developer position, but you'll be able to hold your own in a team meeting with developers. It will also make you appreciate how one small request can be a lot of work for a coder. For more information click here https://www.reddit.com/r/SEO/comments/f49f8c/isitimportantforanseotoknowcoding/.