Hello ! GetAllActorsOfClass will return all instances of a class that are spawned in the world.
If you created a BP named TargetPoint (I guess that’s what you did), you just need to pass the BP reference (the one in your content browser) to this node, and at runtime it will store all your spawned target points in an array. Then it’s up to you to find a way to get the correct one, maybe with an ID variable or whatever.
Also to connect your nodes you need to “GetActorLocation” and “GetActorRotation” from your TargetPoint Reference.