To translate the title of your Webform, navigate to “Content”, find your Webform and click on “Edit”. On the page that appears, make sure that the language is set to English. If it is not, set it to English, save the Webform and edit it again. Finally, at the top-right of the page, click on the tab “Translate”.
The following page will present a table of the languages available. To the right of French, click on “add”.
Provide your French title and click on “Enregistrer” (Save). You have now translated the title of your Webform.