Hey there @Mesha! So you’re looking at what’s called a “Validated Get Node” you get it by right clicking a get node and turning it into a validated get from it’s context menu. The set with a target usually comes when you are setting a different actor’s variable.
The target pin is there when you’re trying to get or set a variable that is not of the “self” blueprint. So if you for example cast something to a class, and you set a variable on the result of the cast, you will get the target pin