Check "Disable Storage Sense Low-Space Notifications" Status

<#
.SYNOPSIS
    Checks whether "Disable Storage Sense Low-Space Notifications" is currently applied.

.DESCRIPTION
    Reads HKCU:\Software\Microsoft\Windows\CurrentVersion\StorageSense\Parameters\StoragePolicy \ 512 and reports its current value,
    or reports that it isn't set (falling back to the Windows default).

.EXAMPLE
    .\Test-DisableStorageSenseNotificationsStatus.ps1
#>

[CmdletBinding()]
param()

$regPath = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\StorageSense\Parameters\StoragePolicy'

$value = Get-ItemProperty -Path $regPath -Name '512' -ErrorAction SilentlyContinue

if ($null -eq $value) {
    Write-Host "'512' is not set at $regPath (using the Windows default)." -ForegroundColor Yellow
} else {
    Write-Host "Current value of '512': $($value.'512')" -ForegroundColor Green
}