If the song is :
vArrangerData/Styles/StylesRom1/Unplugged/MySong.STY
The score will be :
vArrangerData/Styles/StylesRom1/Unplugged/Score/MySong.PDF
It's not working only with styles, but it's exactly the same with midifile or mp3
If you right click on the Unplugged button, it will open directly the windows explorer, so you can create the SCORE folder.
You can decide to create a new folder for your songs, or many folders, grouped by song type or by "playlist". When you create a new folder in the vArrangerData/Styles/StylesRom1/ , a new button will come to access those files.
It's good to have all your files inside this folder, so the search feature will find them.
Also, right click on files displayed on the left vertical list, and you will have shortcut to move, copy, rename or delete the files.