[ShrimpBurrito]

I'm not familiar with that particular wheel style, and so I can't give you a first hand account, but I'm guessing that cap is a plastic decorative cap that should come off without removing the wheel. And then likely, under that is a metal cap, much more utilitarian looking, and which provides actual protection to the bearings. Under that cap is also likely to be the EZ Lube fitting, to which a grease gun would attach and allow you to lubricate the bearings. Such a lube fitting is common on trailers, and meant to be regularly accessed in some cases, and so any wheel manufacturer that would circumvent that design wouldn't be bought by OEM manufacturers having a wheel hub that includes such a lube fitting.

On the other hand, I doubt it is necessary to lube the bearings with a 2020 model.

Dave