So if I’m reading this correctly your current Sword you hold at begin play is your Child Actor Component. If this is true, get your child actor, drag off of child actor and type “get child actor”.
You should get something like this:

This will return a reference to the actor set as your child actor inside your child actor component.
Keep in mind that the Child Actor in your components tab is a component and not the actual actor!
(edited for readability)