$SPServiceAccount= ‚SP\sql_service‘
$SPAppMngmtDBName = ‚SP_AppMngmt‘
$SPSubscriptionDBName = ‚SP_SettingsService‘


Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue

Get-SPServiceInstance | where{$_.GetType().Name -eq „AppManagementServiceInstance“ -or $_.GetType().Name -eq „SPSubscriptionSettingsServiceInstance“} | Start-SPServiceInstance

$account = Get-SPManagedAccount $SPServiceAccount -ErrorAction Stop

$appPoolAppSvc = New-SPServiceApplicationPool -Name AppServiceAppPool -Account $account
$appAppSvc = New-SPAppManagementServiceApplication -ApplicationPool $appPoolAppSvc -Name AppServiceApp -DatabaseName $SPAppMngmtDBName
$proxyAppSvc = New-SPAppManagementServiceApplicationProxy -ServiceApplication  $appAppSvc

$AppPool = New-SPServiceApplicationPool -Name SettingsServiceAppPool -Account $account
$App = New-SPSubscriptionSettingsServiceApplication -ApplicationPool $appPool -Name SettingsServiceApp -DatabaseName $SPSubscriptionDBName
$proxy = New-SPSubscriptionSettingsServiceApplicationProxy -ServiceApplication $App