Hello,
Have you created translation for WooCommerce and XStore Core plugins?
https://xstore.helpscoutdocs.com/article/30-base-theme-translation https://woocommerce.com/document/woocommerce-localization/
Update translation files https://xstore.helpscoutdocs.com/article/103-translation-files-update after the synchronization try to find and translate mentioned strings.
Regards