Hi @Krissy S.
No worries, here is the example from the docs with some extra PHP to create a counter:
<?php if(get_field('repeater_field_name')): $i = 0; ?>
<ul>
<?php while(has_sub_field('repeater_field_name')): $i++; ?>
<li class="section-<?php echo $i; ?>">
sub_field_1 = <?php the_sub_field('sub_field_1'); ?>, sub_field_2 = <?php the_sub_field('sub_field_2'); ?>, etc
</li>
<?php endwhile; ?>
</ul>
<?php endif; ?>
