reference:
Smart Scan Not Included in New Download
https://community.norton.com/en/forums/smart-scan-not-included-new-download
Apps & features => Norton 360 =>Uninstall => I plan to reinstall, so keep my settings =>
DSP-N360-ESD-22.24.3.2-EN.exe => Restart => LiveUpdate => Restart => LiveUpdate
as always, your mileage may vary