Hello,
Create a translation for WooCommerce plugin – https://docs.woocommerce.com/document/woocommerce-localization/
Do not forget about Core plugin. Loco translate > Plugins > XStore Core > New language > Choose a language + Choose a location – System > Start translating.
Sync translation of the theme – https://xstore.helpscoutdocs.com/article/103-translation-files-update , then find and translate untranslated strings.
Regards