Board Thread:Support Requests - Getting Started/@comment-38726597-20190306133635/@comment-34804319-20190306140229

You can ask an admin on the wiki in question if they will allow separate translation pages for articles (perhaps as subpages), though generally the best practice is to create a new wiki in the desired language, and build it from there.

Content hosted on Fandom is free to use by anyone, as long as proper credit/attribution is given. I would leave a message on an admin's wall stating your intention to translate their content on another wiki while still crediting the original author(s) for the work