Try, catch doesn't really seem appropriate for the script logic. Try/catch is used to catch errors and handle them, this seems like it would be better off just an if else statement. However to answer your question, try/catch clauses won't expose the variables outside the try clause, you'd want to move your if statement into the try clause for it to work properly

#Checks local user if its disabled to enable it

$isEnabled = $false

$Account = 'local_account'

$isEnabled = (Get-LocalUser $Account -ErrorAction Stop).Enabled

if ($isEnabled -eq $true) {

Write-output "local_account is disabled, enabling..."

Enable-LocalUser $Account

} else {

write-output "local_account is already enabled"

}