get user information in front end

https://codex.wordpress.org/Function_Reference/the_author_meta


<h2><?php the_author_meta( 'display_name' ); ?></h2>

<p><?php echo the_author_meta('description'); ?></p>

<a href="http://twitter.com/<?php echo the_author_meta('twitter'); ?>" target="_blank"><?php echo the_author_meta('twitter'); ?> sdcfsdf</a>