I feel like the TOS license agreement is confusing. it seems confliting and says yes and no. Can someone verify if free content like rocks and plants can be used to create a UEFN project? It seems like the answer is no. What is the point of the Free content if we cant use it to create anything with it?
You are permitted to use the content Fortnite exposes in the content browser Under the Fortnite and Unreal Engine Folders inside your Unreal Editor For Fortnite Project.
And depending on if you accepted the IP Partner Licensing Agreement you may be allowed to use LEGO and TMNT assets in specified projects assuming you follow the guidelines set forth by them.