Warhammer Fantasy Roleplay Set-up

Hey, I am a new Roll20 GM, trying to set up a WFRP campaign. I have seen other users running both 2e and 4e. I am wondering if people are using anything like a compendium, as I haven't been able to find anything for WFRP specifically other than character sheets. Any tips on api's to use or are these games just created from scratch and other marketplace content? Thanks!

They are almost certainly created from scratch. Only a handful of games-  those roll20 has a license agreement with the publishers - have a Compendium at present.

There is no WFRP Compendium. The wiki has a WFRP guide that should be helpful.