functions.php

<?php

// Repeater field called 'be_section' with 'title' and 'description' subfields
$sections = get_post_meta( get_the_ID(), 'be_section', true );
for( $i = 0; $i < $sections; $i++ ) {
	$title = esc_html( get_post_meta( get_the_ID(), 'be_section_' . $i . '_title', true );
	$description = get_post_meta( get_the_ID(), 'be_section_' . $i . '_description', true );
	echo '<div class="section"><h2>' . $title . '</h2>' . wpautop( $description ) . '</div>';
}