Hi there @HELLOxFRIEND
Once the resources archive unpacked, if you browse through the folder you'll find a Samples & a Project Files sub-folders. In the Samples sub-folder, all the vocals samples named after "Hero Vox - 0004 - Group - VOCAL DOUBLES" are already processed ones, if you want to chop them yourself following the tutorial, the original vocals sample is located in the Project Files sub-folder at this location :
Project Files/HTM Trap DISKORD Project/Samples/Splice/Hero Vox - 0004 - Group - VOCAL DOUBLES1.aif_