/**
 * Change the breadcrumb home text from "Home" to "Shop"
 */
add_filter( 'woocommerce_breadcrumb_defaults', 'woo_change_breadcrumb_home_text' );
function woo_change_breadcrumb_home_text( $defaults ) {
	$defaults['home'] = 'Shop';

	return $defaults;
}

add_filter( 'woocommerce_breadcrumb_home_url', 'woo_custom_breadrumb_home_url' );
/**
 * Change the breadcrumb home link URL from / to /shop.
 * @return string New URL for Home link item.
 */
function woo_custom_breadrumb_home_url() {
	return '/shop/';
}