I read through the Orca Slicer manual on github, but I don't understand how the retraction test works. I have no idea how I'm suppose to distinguish the results. Would anyone like to explain in layman's terms what it is I'm looking for?
Wasn't aware of the test (SuperSlicer user here), and found this.
The tower has multiple notches, each one corresponding to a different retraction length. By looking at the tower after printing, you can see how each retraction length affects the print quality.
So check your surface finish and select the retraction value with the best looks.