Instead of displaying the value of the Score field of the Score data type you are displaying the value of the Score field of another data type which is the User data type.

I suggest the following modifications:
1- Replace the User Name field of type text with an Owner field of type User.
2- I guess that the Score field in the User is of type number, if so replace it with a Score field of type Score.
3- add the needed workflows that create and update the Score fields and data things (entries).

Then you will be able to display the score either by using Current User's Score or by using Do a search for Score with a constraint Owner = current user