Secure Score/SecureScoreOverTimeReport/Grant-SubscriptionPermissions.ps1

Connect-AzAccount

$spID = (Get-AzADServicePrincipal -DisplayName "Get-SecureScoreData").Id

$subs = Get-AzSubscription
foreach($sub in $subs){
    $subid = $sub.Id
    New-AzRoleAssignment -ObjectId $spID -RoleDefinitionName "Reader" -Scope "/subscriptions/$subid"
}