It seems to be saying one or both of two things. One is that any score that comes out of any procedure that purports to measure intelligence is a value of the scale, intelligence. If so, this would be Humpty Dumptyism..
() From the fictional character Humpty Dumpty in Lewis Caroll's Through the Looking-Glass, who, when asked what he meant by "glory", replies "I meant 'there's a nice knock-down argument for you!'". Alice protests that this isn't the meaning of "glory" and Humpty Dumpty replies "When I use a word it means just what I choose it to mean — neither more nor less."