Add type to enqueued script inside plugin

There’s a filter: script_loader_tag.

add_filter( 'script_loader_tag', 'wpse397773_change_script_tags', 10, 3 );
function wpse397773_change_script_tags( $tag, $handle, $src ) {
    $tag = '<script type="text/plain" src="' . $src . '" id="' . $handle . '-js"></script>';
    return $tag;
}

This should change all the <script> tags in the page (assuming they’re properly enqueued) to <script type="text/plain">.

Update: To only change the <script> tag for the juicerembed script, you can do this:

add_filter( 'script_loader_tag', 'wpse397773_change_script_tags', 10, 3 );
function wpse397773_change_script_tags( $tag, $handle, $src ) {
    if ( 'juicerembed' == $handle ) {
        $tag = '<script type="text/plain" src="' . $src . '" id="' . $handle . '-js"></script>';
    }
    return $tag;
}

I haven’t tested this at all, but hopefully it’ll be a starting point for you.