Get-MicrosoftFormResponse.ps1

# requires Microsoft Forms > Application > Forms.Read.All
Connect-PnPOnline -Url         "https://$env:CDX_TENANT-admin.sharepoint.com" `
                  -ClientId    $env:CDX_CLIENTID `
                  -Thumbprint  $env:CDX_THUMBPRINT `
                  -Tenant      $env:CDX_TENANTID `
                  -ErrorAction Stop

$userObjectId = "a8734c7e-a19b-41c6-b384-........"
$formId       = "pVQHEDt5kk....."
$uri          = "https://forms.office.com/formapi/api/{0}/users/{1}/light/forms(`'{2}`')/responses?`$select=submitDate,responder,answers" -f $env:CDX_TENANTID, $userObjectId, $formId

$accesstoken = Get-PnPAccessToken -ResourceUrl "https://forms.office.com/.default"

$response = Invoke-RestMethod -Method Get -Uri $uri -Headers @{ authorization = "Bearer $accesstoken" }

$response.value