How to check copy files end time

Hi
Question as in subject. I have simple script in ps1 for copying some files.
I would like to see how many time it would take to end copying.

If anyone know how to do it. It will be great help.
If possible please write code in ease way, I dont have many experienc with ps1

Script below
 
$disc = Get-WmiObject Win32_LogicalDisk -filter "deviceID = 'e:' "
$freespace = $disc.FreeSpace
$user = $env:username #przechowuje zmienną %username%
[System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms") 

{Copy-Item -path c:\aaa -Destination e:\bbb -recurse -Force}
{[System.Windows.Forms.MessageBox]::Show("backup end.")}

Best regards and thanks
Keiishi

[System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms") | out-null;
Measure-Command {Copy-Item -path c:\aaa -Destination e:\bbb -recurse -Force};
[System.Windows.Forms.MessageBox]::Show("backup end.")

Hi
Tom thx for reply, that wasnt what I searched, but it was helpfull.
I searched the web and finded some way to implement progress bar, but unfortunately it dont show any progress...
Please help and tell me where I made mistake.

Script below
 
$disc = Get-WmiObject Win32_LogicalDisk -filter "deviceID = 'e:' "
$freespace = $disc.FreeSpace
$user = $env:username
$path = "c:\aaa"
$dest = "e:\aaa"
$counter = 0
$files = Get-ChildItem $path -recurse
$file = Get-ChildItem $path -recurse -Name
$copy = Copy-Item  $path $dest -recurse -Force
$status = "Copying file {0} of {1}: {2}" -f $counter,$files.Count,$file.Name

[System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms") | out-null;

{Foreach($file in $files)
{Write-Progress -Activity "Copy Data" $status -PercentComplete ($counter / $files.count*100)}
$copy
$counter++
{[System.Windows.Forms.MessageBox]::Show("Backup wykonał się poprawnie.")}
}
 
Best Regards and Thanks
Keiishi