I thought I read somewhere that map updates for other VW cars were twice a year. But the ID.4 hasn't been out long enough for anyone to know for certain. Possible that something would show up here:
Volkswagen Navigation Update | Map and GPS System | HERE Navigation
Order your Volkswagen Navigation update and optimize your GPS system’s performance with fresh data including new and modified roads, addresses, and signage. Order online easily.

And for that matter, for some brands, there is a link where you can report errors of one sort or another. I had a link I used for Hyundai at one time, but I haven't found such a thing for VW as of yet. Maybe it is all the same underlying dataset - that I don't know.