CPT category post/content is not showing on my page, Please review my coede

To display the content, you can use the_content(), like this

while ($loop->have_posts()) : $loop->the_post();
    the_title(sprintf('<li><a href="https://wordpress.stackexchange.com/questions/315870/%s" rel="bookmark">', 
    esc_url(get_permalink())), '</a></li>');
    the_content(); // render content
endwhile;