Do search in forum for common question.
Basically make either a text box in a row with VC on your home page, or text box widget in sidebar on home page.
Wrap the text you want for your H1 (should match your title tag meta).
In custom CSS box in theme panel setup a class for the H1 to change size/font/color, etc. and apply that class to the H1 tag in your text box.
Asked and answered. Covered dozens of times in forum. Common to all wordpress themes.
Add either row or column on homepage and wrap text in h1 tag, or use text box in sidebar. To customize size create class and put css in custom css box, then apply that class to h1 tag.
Try it. She be happy and stop waiting.
See dozens of posts in the forum using forum search, e.g.,
https://forum.tagdiv.com/topic/h1-why-it-is-not-found/
OR _ FOR FUTURE SEARCHES:
a) create a row on home page at bottom (or top) of your content with visual composer; –or– simply use text box widget in custom sidebar for home page
b) put your code, and text — e.g.,
<h1 class="homeyh1">My Wonderful site about pizza and cats - pizzacats, all cats eating pizza</h1>
c) in the custom css box in theme panel make your class for the font size/etc you want
.homeyh1{font-size:20px;color#CCC}
Boom there you go!
If none of that makes sense, consider hiring somebody to manage your site.