Hi, good day!
Unfortunately, Windows 11 only supports the taskbar at the bottom of the screen, so it can't be moved to the right using the built-in settings.
If you'd like it on the right, you'll need to use a third-party tool such as StartAllBack or ExplorerPatcher. Just be aware that these tools may require updates after major Windows releases.
If this is a feature you'd like to see in Windows 11, I also encourage you to submit feedback through the Feedback Hub app. Microsoft reviews user feedback and may consider adding it in a future update.