To publish or unpublish languages you should follow this instruction:
- Go to the "Settings" => "Languages" sections.
- Click on the language you want to publish or unpublish.
- Click "Unpublish". If your language is currently unpublished, you will see the "Publish" button. Click it to publish the language.
Note: Shopify allows adding only 5 target languages. You can add more than 5 languages, but only the first 5 will be published and highlighted in green.