<ul id="list-forums">
<?php while ( bbp_forums() ) : bbp_the_forum(); ?>
<li>
<a href="<?php bbp_forum_permalink(); ?>" title="<?php bbp_forum_title(); ?>">
<?php bbp_forum_title(); ?>
<span>( <?php bbp_forum_topic_count(); ?> )</span>
</a>
</li>
<?php endwhile; ?>
</ul><!--/list-forums-->