Microsoft Store - Error 0x80073CFE and other strange things

I've some problem with Microsoft Store on Windows 10, version 1909 (built SO 18363.959). In Settings, App...it doesn't appears, but, if I search it, it appears but doesn't open.

To fix the problem I run the command (as suggested here):

Get-AppxPackage -AllUsers| Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}

in the powershell (launched as admin). The results was a lot of 0x80073CFE errors, and now I am not able to open Settings (when I click on it, it becomes as in the below figure).

Before the above solution I tried also these solutions, but without any success.

Could you suggest me a way to fix these problems without losing the data please?

EDIT: I'd like to preserve the installed softwares as well.

Also the windows icons (battery, volume, ecc) in the toolbar do not work.

EDIT2: the command

DISM /online /Cleanup-Image / ScanHealth

produces the following error (the strange thing is that now the weather app works):

Error: 87

Management and maintenance of distribution images: impossible to recognize the command line option "". For more information, see the Help through the DISM.exe /? Command.

The Image Management and Maintenance log file distribution is available at C: \ WINDOWS \ Logs \ DISM \ dism.log

EDIT3: after the running of the command sfc /scannow, the output is: Windows Resource Protection: No integrity violations found.

To restore the correct state of Windows, there are two solutions:

• If you have System Restore enabled (recommended), rollback to a previous restore point.

• Do a Repair Install of Windows 10 with an In-place Upgrade.