Translate menu items
Translating menu items is very similar to translating any other piece of content in Drupal. See this guide to learn more about translating pages.
1. Translating Main Navigation and Footer
From the list of menu items, find Edit button and select Translate from the drop down menu.
Select language version to edit (Fig 2). If missing, click Add to create one (Fig 3)
Provide title in a selected language and click Save
You can also access Translate screen by clicking Translate tab from the editing form page
NOTE: All language versions of the same menu item must link to the same page. If the menu item is supposed to open Contact Us page and Contact Us page is provided as a target for the base (English) language version link, other language versions of the same menu item will link to respective language versions of Contact Us page. There is no ability to link each language version of the same menu item to different pages.
2. Translating Mega Menu
You can find out how to edit Mega Menu here. For translating mega menu, same steps apply as with translating a menu item. Go to Translate screen (either through Edit button drop down or a Translate tab), click add/edit language version, modify content and save.