Bad Buy. No Script. Need a refund
I'm sorry to hear that, but the pack actually includes the scripts.
When buying, this window will appear:
If you select the option which is inside the blue box:
The download will be a .zip file called "+10 Pixel Art Boomerangs Pack Unity Assets", if you unzip this file there will be 3 files, two folders (one with the boomerangs and the other with a Unity project that contains the scripts) and a .txt file called "README" that has the instructions to set the pack up. If you don't click in that option the download file will just have boomerangs.
If you purchased the file called "+10 Boomerangs Pack + Unity Script" the scripts should be in the following: +10 Pixel Art Boomerangs Pack Unity Assets folder > Scripts.
If you have any other problem let me know and I will help with it.