Pulling from Category Page

I want to pull the contents of a archive/category page on WordPress to show on a subdomain via an index.php.

Here’s what I want to see, the contents of this page: https://intorremolinos.co.uk/placecategory/accommodation/

Here’s the sample subdomain, where I want the previous to appear: https://catredi.intorremolinos.co.uk/

Here’s the main domain: https://intorremolinos.co.uk/

Right now, all that is showing is the exact same thing the homepage has.

I already have something though obviously it’s not working. Here’s the code I’m using, it’s on an index.php file on the subdomain folder.

<?php
/**
* Front to the WordPress application. This file doesn't do anything, but loads
* wp-blog-header.php which does and tells WordPress to load the theme.
*
* @package WordPress
*/

/**
* Tells WordPress to load the WordPress theme and output it.
*
* @var bool
*/
define('WP_USE_THEMES', true);
$_GET['placecategory_id']=56;

/** Loads the WordPress Environment and Template */
require('../wp-blog-header.php');

[Please post code & markup between backticks or use the code button. Your posted code may now have been permanently damaged by the forum’s parser.]

What’s the solution for this?

[No bumping. If it’s that urgent, consider hiring someone.]