You should find a new custom post type listed to the side of your admin menu.

<?php
////////////////////////////////////////////////////////
// Custom Post Types
////////////////////////////////////////////////////////

// Add CPT Products
add_action( 'init', 'register_cpt_services' );

function register_cpt_services() {
 
 $labels = array( 
 'name' => __( 'services', 'text_domain' ),
 'singular_name' => __( 'service', 'text_domain' ),
 'add_new' => _x( 'Add New', '${4:Name}', 'text_domain' ),
 'add_new_item' => __( 'Add New', 'text_domain}' ),
 'edit_item' => __( 'Edit', 'text_domain' ),
 'new_item' => __( 'New', 'text_domain' ),
 'view_item' => __( 'View', 'text_domain' ),
 'search_items' => __( 'Search', 'text_domain' ),
 'not_found' => __( 'No post type name found', 'text_domain' ),
 'not_found_in_trash' => __( 'No post type name found in Trash', 'text_domain' ),
 'parent_item_colon' => __( 'service:', 'text_domain' ),
 'menu_name' => __( 'Services', 'text_domain' ),
 );
 
 $args = array( 
 'labels' => $labels,
 'hierarchical' => true,
 'description' => 'description',
 'taxonomies' => array( 'service-categorys' ), //Assigning the new service categories
 'public' => true,
 'show_ui' => true,
 'show_in_menu' => true,
 'menu_position' => 5,
 'menu_icon' => 'dashicons-heart', //menu icons
 'rewrite' => array( 'slug' => 'single-service' ),
 'show_in_nav_menus' => true,
 'publicly_queryable' => true,
 'exclude_from_search' => false,
 'has_archive' => true,
 'query_var' => true,
 'can_export' => true,
 //'rewrite' => true,
 'capability_type' => 'post',
 //'show_in_menu' => 'options-general.php', // set post type as sub menu item 
 );
 
 register_post_type( 'services_cpt', $args );
 flush_rewrite_rules();
}

?>

Awesome!

Now lets link up some ACF Fields to this CTP menu item.