Hi Newest,
Having sharing enabled at replies will make no sense because it will also share the url of the topic (replies are posted at the same url as topic)
Follow the steps mentioned below to enable social sharing at your topics:
1. Open “/wp-content/plugins/bbpress/bbp-themes/CURRENT_THEME/single-topic.php” (located in your WordPress root folder).
2. Search following code:-
<?php bbp_get_template_part( ‘bbpress/content’, ‘single-topic’ ); ?>
3. To display Social Sharing – Horizontal interface, place following code before (if you want to show it before the topic content) and after (if you want to show it after the topic content) the code searched in step 2:-
<div class=”loginRadiusHorizontalSharing”></div>
<div style=”clear:both”></div>
4. To display Social Sharing – Vertical interface, place following code after the code searched in step 2:-
<div class=”loginRadiusVerticalSharing”></div>
5. Save the file back. Replace existing file, if prompted.
Note: For above steps to work, Social Sharing must be enabled from “Social Sharing” section at LoginRadius page in your WordPress Admin panel.