Host script and use it in Webflow

I want to upload a js file using jsdeliver but i am getting error cross-Origin read blocking

Yes it is, first upload it to your assets as a txt file, then you would have to do something like this

<script>
    fetch('**TEXT FILE LINK FROM WEBFLOW**')
        .then(response => response.text())
        .then(script => {
            const scriptEl = document.createElement('script');
            scriptEl.type = "text/javascript";
            scriptEl.textContent = script;
            document.head.appendChild(scriptEl);
        })
        .catch(error => console.error('Error loading script:', error));
</script>