Hi @Hindou,
After verification i not see the call for list application in ISC Powershell SDK may be this is because it’s a private call and will depredecated soon (GET /api/app/list).
Here a simple PowerShell script that can achieve your need :
$headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
$headers.Add("Authorization", "Bearer {{youraccesstoken}}")
$response = Invoke-RestMethod 'https://{{temant}}.api.identitynow.com/cc/api/app/list?filter=org' -Method 'GET' -Headers $headers
$response | ConvertTo-Json
Note : you must replace {{youraccesstoken}} by your access token and {{temant}} by your tenant name.