The standing claim is that Hunter Biden’s emails do affirmatively show Joe Biden’s involvement in questionable or illegal activity.
The emails do not show that. This has been established by all major news outlets, even Fox News.
Therefore it is debunked.
Now, some totally separate other evidence may show something different. That is irrelevant. The claim is about what these emails affirmatively prove or corroborate. If someone were to say these emails suggest impropriety by Joe Biden, that claim is totally debunked.