Welcome to the forum, and the world of iClone.
To get the Resource Pack, and several other Bonus packs, go to the main Reallusion Page and Login with your email and password. Next click on "My Account" at the top of the page, this will take you to a page showing you any RL products that you have purchased. Click on Patch/Bonus to the right of Program|iClone|iClone 5 Pro. A window will open listing all Bonus content available for download.
If you don't have an account you will be prompted to register your product and create one.
Gerry
System: Win 10 Pro (21H2), Asus X99-E WS, CPU i7-5930K -3,5 GHz, 32 GB DDR4 2666-16 RAM, NVidia GTX 1080 Ti GPU - 11 GB VRAM(Driver Studio-536.99), Samsung 850 Pro 512 GB SSD, 6 TB HD storage.