Hi barushahmedov,

Thanks for reaching to us and appreciate your patience.

You don’t need to translate Child theme if you don’t have custom strings.

+ In order to change / translate words. Please make sure you synced the strings first before changing / translating WooCommerce, WoodMart Core plugins and WoodMart theme. You can refer to article

https://xtemos.com/docs-topic/theme-translation/
https://xtemos.com/docs-topic/how-to-make-woodmart-multilingual-with-wpml/

+ You are also need to select the language for the backend and theme settings for admin from the admin user profile, please edit the user’s profile and then select the language for that user it will show the same on the backend.

If you have any questions please feel free to contact us.

Regards,