Given how any amount of Fortnite I’ve had to play was due to circumstances beyond my control, and I have vehemently despised the experience, no I don’t think I would want to see Bionicle make an appearance there, and I certainly wouldn’t be compelled to pick it up in the event Bionicle was represented in some fashion.
We already have several excellent fan games both currently available and in the works, so I don’t know why the aspiration to have it feature in the only remotely viable financial venture Epic Games has undertaken.