Iterate through all environments and get all PowerApps apps and the connections they use.

PS-Get_PowerApps_App_Connections.ps1

Add-PowerAppsAccount

$environments = Get-PowerAppEnvironment
foreach($environ in $environments.EnvironmentName)
{
    $apps = Get-AdminPowerApp -EnvironmentName $environ
    $apps | Add-Member -MemberType ScriptProperty -Name Connections -Value {$this.internal.properties.connectionReferences.PSObject.Properties.Value.DisplayName} -Force
    $apps | Select-Object AppName, DisplayName, Connections
}