Hi there!

Thanks for reaching out.

Please use the following code in your custom CSS:

@media (max-width: 991px) {
    #sp-menu .social-wrap {
        display: none !important;
    }
}

Here is all about custom code placement in Helix Ultimate: https://www.joomshaper.com/documentation/helix-framework/custom-code-css-js-meta

Hope this will serve your purpose of hiding social icons for smaller devices.

Best regards,