How to add taxonomy to user?

There comes a hook in wordpress named Parent File (Filters the parent file of an admin menu sub-menu item) read more about it here

In your case it goes like:

add_filter('parent_file', 'parent_menu');

function parent_menu($parent="") {
    global $pagenow;
    
    if(!empty($_GET['taxonomy']) && $pagenow == 'edit-tags.php' && $_GET['taxonomy'] == 'category') {
        $parent="edit.php";
    }
     /*If we're editing one of the user taxonomies
    We must be within the users menu, so highlight that*/
    if(!empty($_GET['taxonomy']) && $pagenow == 'edit-tags.php' && $_GET['taxonomy'] == 'team') {
        $parent="users.php";
    }
    
    return $parent;
}

Hope that it solves your problem.