To make the WBFS into a ISO file you need a program called "Wii Backup Manager"

WBM

Step 1:Extract WBM with Winrar or 7-Zip
Step 2:Open WBM and select "Add" and then "files.."
Step 3:Select the WBFS file that came in the Torrent
Step 4:Click the checkbox then click "Transfer" then "ISO.."
Step 5:Burn the ISO to a disc or use "WBFS Manager" to put it on a flashdrive

I hope this tutorial helped comment if you have any trouble I will be glad to help