From VG247: “Heres where you can find a Supply Llama in Fortnite, including tips on where they spawn. Everyone loves a llama especially when theyre purple and drop a variety of deadly weapons. The tricky thing about Supply Llamas though is that their spawn locations appear to be semi-random, so its going to take you at…”
Source: N4G PC Fortnite: Where to find a Supply Llama – Supply Llama spawn locations