Firebase query | JS [требует правки]

im working on one project with this Database structure:

How can I display/SELECT, for example nearestAddress from db?

Example:

const oneRef = rootRef.child('orders').child(firebaseUser.uid).orderByChild('createdBy').equalTo(firebaseUser.uid);

After this "SELECT" I get the whole Object as i wanted, but how to call this random number on the next child level to select data inside object?