Cacher is the code snippet organizer for pro developers

<?php
// Fetch All Service Categories & List their posts
$service_categories = get_terms(array(
    'taxonomy' => 'service_type',
    'parent' => 0
        ));


foreach ($service_categories as $service_category) {
    echo '<li>' . $service_category->name . '</li>';

    $serive_detail = get_posts(array('service_type' => $service_category->slug, 'post_type' => 'service', 'posts_per_page' => -1));
    
   // var_dump($serive_detail);

    foreach ($serive_detail as $serivep) {
        echo $serivep->post_title;
        echo $serivep->post_content;
        echo "<br><br>";
    }
}
?>