BuddyPress.org

I have a page that will display a random member using this code:

<?php  if ( bp_has_members( 'type=random&max=1' ) ) : ?> <br>
<?php while ( bp_members() ) : bp_the_member(); ?> <br>
<?php if ( bp_get_user_has_avatar()  && $bp_count_members =1) : ?> <br>
<a href=&quot;<?php bp_member_permalink() ?>&quot;><p style=&quot;text-align:center;&quot;><?php bp_member_name(); ?></p></a><?php bp_member_avatar('type=full&width=425&height=625') ?></a><?php endif; ?> <br>
<br>
<?php endwhile; ?><br>
<?php endif; ?>

so now I’m looking for a way to let the other members to rate this user and finally I want to print out the top-rated user at the same page, I’m looking for your suggestions, I know html and css and learning PHP to but I’m not so well on PHP! BTW I want to learn that through this kind of projects.
I use the latest version of WP and BP.
Regards
Amid