Do I need to create the following file? Do I need to add to Child theme?
Duplicate your theme’s page.php file, and name it woocommerce.php. This file should be found like this: wp-content/themes/YOURTHEME/woocommerce.php.
Edit your page (woocommerce.php)
Open up your newly created woocommerce.php in a text editor (or the editor of your choice).
Replace the loop
Next you need to find the loop (see The_Loop). The loop usually starts with a:
<?php if ( have_posts() ) :
and usually ends with:
<?php endif; ?>
This varies between themes. Once you have found it, delete it. In its place put:
<?php woocommerce_content(); ?>
This will make it use WooCommerce’s loop instead. Save the file. Your done.