Hello ! I'm Aymeric, an independent advisor, and I'm here to help !
If you're still in 23H2 in your Windows Settings and in winver, it means that the update was not applied to your PC.
That's not a problem : you can still start the update again by using the Windows 11 Installation Assistant :
https://go.microsoft.com/fwlink/?linkid=2171764The app will download and install the latest version of Windows on your PC.
Please let me know if you have any other question !