This feature is added to module version 5.1.2
Version 5.1.2 is only available for OpenCart 188.8.131.52 and all OpenCart 3.x.x.x versions.
You can now add script or code using this module and place the module to particular layout or page or particular category or categories, particular product or products, particular brand or brands.
You can remove all the content from the “content” tab and use only the JS script field to add the script to your storefront pages.
You can assign filters as per your requirement so that the script works only on those pages.