This php snippet or loop allows you to get to the buddypress profile fields. This one gets the birthday for user id#22, you need to create a profile field named 'birthday' for this to work.
<?php if (bp_has_profile('user_id=22')) : ?>
<?php while (bp_profile_groups()) : bp_the_profile_group(); ?>
<?php while (bp_profile_fields()) : bp_the_profile_field(); ?>
<?php if (bp_field_has_data()) : ?>
<?php $fieldname = strip_tags(bp_get_the_profile_field_name()) ?>
<!-- show the birthday -->
<?php if($fieldname == 'Birthday'){echo bp_get_the_profile_field_value();}?>
<?php endif; ?>
<?php endwhile; ?>
<?php endwhile; ?>
<?php endif;?>
