how can i do metabox [closed]

ID;
$meta_value = get_post_meta($post_id, ‘episodes’, true);
?>

<label for="episodes">Bölüm Sayısı Örnek 1.Bölüm:</label>
<div>
    <input type="text" name="episodes" value="<?php echo $meta_value; ?>" id="episodes" />
</div>

ID;

if (isset($_POST[‘episodes’]) && !empty($_POST[‘episodes’])) {
update_post_meta($post_id, ‘episodes’, $_POST[‘episodes’]);
} else {
delete_post_meta($post_id, ‘episodes’);
}
}
add_action(‘save_post’, ‘bolumler_save’);

See my teacher, I created one but I can use only one of them. Room episodes. I want to add 2 more places. How can I add twshows – into places like seasons?