Hi, I am Dave, I will help you with this.
if you do not see the version 23H2 update listed in your settings app, you can use the Windows 11 ISO to perform the update, this is not like re-installing Windows.
Please follow the steps, this is then just an update and your personal files, settings and installed software will not be affected.
Click this link:
https://www.microsoft.com/en-us/software-downlo...
to download the Windows 11 ISO
When the ISO file completes downloading
Disconnect from the Internet
Disconnect all external devices with the exception of a mouse or keyboard.
Temporarily disable any 3rd party Anti-virus you may have installed
Then, in Windows File Explorer, double click the ISO and then run Setup.exe and select the upgrade option.