This allows you to output texts before the feedback form, so as soon as the feedback form is visible, this text is displayed directly before the form.

/**
 * This text is always displayed before the feedback form
 * as soon as the feedback form is output by Helpful.
 *
 * @return void
 */
function custom_function() {
	echo 'This is shown before the feedback form.';
}

add_action( 'helpful_before_feedback_form', 'custom_function' );