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About this issue now don’t have options to allow you Add Header Elements.
You can manage Header Elements in Theme Options -> Header -> Header Elements or Edit page then go to Page Options at bottom of Page and click on tab Header Elements to manage.
However in your case you can do it via child theme follow this topic tutorial:
The template for customize is: wp-content/themes/clarivo/templates/header/header-elements/header-elements-right.php (depend on Header you are using) https://prnt.sc/tduhe7
You can add your code on line 44: https://prnt.sc/tduho5
Hope this help!