Quality of a product (and its properties) must be measurable, otherwise it is not quality. If it is measurable, it has to have an objective measure. Completely subjective things (like film) do not have an objective measure. There is no objective measure for properties such as story, acting, dialogue, music, sound, etc.
Then what term other than “quality” would you use for measuring how good you think something is?
The term “opinion”. And you don’t measure anything. You simply think how good something is.