How to display the number of items in a category (normal)

wp_category_number1.php

add_filter('wp_nav_menu_objects','my_nav_count');
function my_nav_count($items){
foreach ($items as $item){
if($item->object == 'category'){
$item->title .= " (". get_term($item->object_id,'category')->count .")";
$args[] = $item;
}
}
return $args;
}