Show a specific post in wordpress with links

They’re not clickable because that output doesn’t include any of the post permalinks. You can try this:

By <?php the_author_posts_link(); ?> on <?php the_time('F jS, Y'); ?>  in <?php the_category(', '); ?>
<?php
$post_id = 1;
$queried_post = get_post($post_id); ?>
<h2><a href="<?php echo esc_url( get_permalink( $post_id ) ); ?>"><?php echo $queried_post->post_title; ?></a></h2>
<?php echo $queried_post->post_content; ?>

That should get the title working as a link for you.

To explain, you have set the post ID using $post_id = 1, so using get_permalink( $post_id ); you can get the URL for the entry. Inside your <h2> you just add an <a href=""> and wrap the title with it.

Hope that helps.