Here is the PowerShell script for setting up AG Listener. Please replace the variables as shown in the video.

$ClusterNetworkName = "MyClusterNetworkName" # the cluster network name (Use GetClusterNetwork on Windows Server 2012 of higher to find the name)
$IPResourceName = "ClusterIPResourceName" # the IP Address resource name
$ClusterCoreIP = "n.n.n.n" # the IP Address of the Cluster IP resource. This is the static IP address for the load balancer you configured in the Azure portal.
[int]$ClusterProbePort = nnnnn # The probe port from the WSFCEndPointprobe in the Azure portal. This port must be different from the probe port for the availability group listener probe port.

ImportModule FailoverClusters

GetClusterResource $IPResourceName | SetClusterParameter Multiple @{"Address"="$ClusterCoreIP";"ProbePort"=$ClusterProbePort;"SubnetMask"="255.255.255.255";"Network"="$ClusterNetworkName";"EnableDhcp"=0}