Get image and item count of listing_category

Hello,

I’m trying to get the image link and item_count of each listing_category when writing a hook in Listing Hive functions.php.

Do you have any idea on how I may proceed ?

Here’s my attemps so far

<?php
function add_image_to_submenu($items, $args) {
	
	// echo '<pre>' . print_r(get_defined_vars(), true) . '</pre>';
	
	foreach($items as &$item) {
		if ($item->menu_item_parent != 0) {
			
			$item->title = '<b>'. $item->ID .'</b> '. $item->title;
			echo '<pre>'.var_dump($item).'</pre>';
		}
		
		// Models\Listing
	}
	
	return $items;
}

add_filter( 'wp_nav_menu_objects', 'add_image_to_submenu', 10, 2);
?>

Thank you for any reply.