Late to the party, but I had to deal with a similar task ;)
In the meantime, current version of Helix Ultimate v2.0.11, it should work as expected.
The PopOver initialization script is included in the template's main.js file.
The actual PopOver component and the related ToolTip component are included in the Bootstrap5 bundle. So it should be enabled on the entire website.
Usage and syntax can be found here:
https://getbootstrap.com/docs/5.1/components/popovers/
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PS: Regarding your older question 10 months ago... If you want to fire a custom script or initialization, you have to add a trigger or event. Something that starts the script, when entering the website. Actually, when the page is ready.
A.) Vanilla JavaScript
window.onload = function() {
// YOUR CODE HERE!
}
B.) Vanilla JavaScript
window.addEventListener('load', function() {
// YOUR CODE HERE!
})
C.) If jQuery is loaded on your site
jQuery(function($) {
$(document).ready(function() {
// YOUR CODE HERE!
});
});
Hope this helps.