Hello, Hasairi
Please read our documentation and watch videos about menus – https://xstore.helpscoutdocs.com/article/86-general-information https://xstore.helpscoutdocs.com/article/27-mega-menu
Appearance > Menus > select the menu and edit it depending on your needs https://prnt.sc/8CkOSucn2gF1 Make sure Product categories are enabled here – https://prnt.sc/ibDakeGescnB
More info is in our video tutorials and docs, menus are base WP functionality. So WP tutorials will also help you – https://codex.wordpress.org/WordPress_Menu_User_Guide
About translation, please watch videos – https://xstore.helpscoutdocs.com/article/30-base-theme-translation
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Kind Regards, 8theme team
