Hi,
You need to translate the parent theme – https://xstore.helpscoutdocs.com/category/18-theme-translationThe child theme should be translated only in case you added custom code in child theme that includes localization functions.
Strings of the Cart dropdown come from Core plugin. Loco translate > Plugins > XStore Core > New language > Choose a language + Choose a location – System > Start translating.
WoCommerce plugin – https://docs.woocommerce.com/document/woocommerce-localization/
Regards
