Hello,
Please run Windows Update troubleshooter from Settings app > Update & security > Troubleshoot. See if it works.
If that doesn't work, try this:
Open administrative Command Prompt and type following commands one-by-one followed by Enter key.
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
Ren C:\Windows\System32\catroot2 Catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver
If issue still persists, we can install updates manually using this guide: https://www.kapilarya.com/manually-download-and-install-windows-updates-in-windows-10
If nothing helps, reset Windows Update components: https://docs.microsoft.com/en-us/windows/deployment/update/windows-update-resources
Hope this helps!
Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.