How can I activate the Bow Scope?

Hi guys I just crafted a bow
Scope for my compound hunting bow. I thought it would change the distance but it’s still the same at 18. Is there a way to activate the scope. It’s not making much sense to me how it helps. Thanks !

The bow scope (once installed onto a bow) does not increase the shooting distance (just as in real life), but the accuracy (= less dispersion).
Once installed, it is automatically applied on every shot until you uninstall it and does not need activation.