Hello @tech13,
Thanks for asking.
Please note that this will require some bit of custom development which falls outside the scope of support we can offer. However, I can definitely point you in right direction that will help you in adding icon in topbar.
This will require template change so I would advise you to setup child theme using following resource.
https://theme.co/apex/child-themes
After that you need to copy _topbar.php from /wp-content/themes/x/framework/legacy/cranium/headers/views/global/ to /wp-content/themes/x-child/framework/legacy/cranium/headers/views/global/.
After that you need to make the code changes before line number18. You need to add image/icon over there and then use CSS to style the element. I am sharing relevant HTML tags tutorial that you will need.
https://www.w3schools.com/tags/tag_img.asp
https://www.w3schools.com/tags/tag_a.asp
Thanks.