Sorry I just realized I should have added it as a code
add_action('woocommerce_single_product_summary',"finish_image",22);
function finish_image() {
$terms = get_the_terms( $post->ID , 'pa_metal-finish' );
if($terms) {
foreach( $terms as $term ) {
echo '<b>Finish:</b>'. '<img src= '<?php get_field('finish_img', 'pa_metal-finish'. '_' .$term->term_id);' ?>' />'
}
}
}