$OU="ou=Users,dc=domain,dc=dom"

#$SS="OneLevel"
$SS="SubTree"

Write-Host "All Accounts:"
(Get-ADUser -SearchBase $OU -SearchScope $SS -filter *).count

Write-Host "Enabled Accounts:"
(Get-ADUser -SearchBase $OU -SearchScope $SS -filter *|where {$_.enabled -eq "True"}).count

Write-Host "Disabled Accounts:"
(Get-ADUser -SearchBase $OU -SearchScope $SS -filter *|where {$_.enabled -ne "False"}).count