In your user preferences on this forum, you can choose an Interface Language which affects some of the UI text.
Now, I am also experimenting with Discourse's AI translations feature. I randomly enabled these three languages: Arabic, Japanese, Ukrainian. About 40 different languages are supported, but adding more than 3 would require upgrading our Pro plan, with funding which we currently don't have.
It means that if you have configured one of these three as your Interface Language, you will now also see new public forum posts auto-translated to this language. I haven't yet configured it to translate older content.
It's just an experiment. If you try it, let me know how it's working for you.