Создаешь в твоей теме папку WooCommerce и там создаешь папку global, в этой папке(global) создаешь файл breadcrumb.php с следующим содержанием.
<?php
/**
* Shop breadcrumb
*
* This template can be overridden by copying it to yourtheme/woocommerce/global/breadcrumb.php.
*
* HOWEVER, on occasion WooCommerce will need to update template files and you
* (the theme developer) will need to copy the new files to your theme to
* maintain compatibility. We try to do this as little as possible, but it does
* happen. When this occurs the version of the template file will be bumped and
* the readme will list any important changes.
*
* @see https://docs.woocommerce.com/document/template-structure/
* @package WooCommerce/Templates
* @version 2.3.0
* @see woocommerce_breadcrumb()
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
if ( ! empty( $breadcrumb ) ) {
echo $wrap_before;
foreach ( $breadcrumb as $key => $crumb ) {
echo $before;
if ( ! empty( $crumb[1] ) && sizeof( $breadcrumb ) !== $key + 1 ) {
echo '<a href="' . esc_url( $crumb[1] ) . '">' . esc_html( $crumb[0] ) . '</a>';
} else {
echo esc_html( $crumb[0] );
}
echo $after;
if ( sizeof( $breadcrumb ) !== $key + 1 ) {
echo $delimiter;
}
}
echo $wrap_after;
}
И там уже редактируешь его, или плагин устанавливаешь