How can I legally insert the music for a fortnite video?

Use Xxxtentacion for my fortnite highlights using video. To the channel. The problem I do not know from where I should donlowden or is there another possibility. I need the data so that I can insert them.

I'm not an Xxxtentacion fan at all. On the contrary.

But it is extremely disrespectful to want to use his music in a Fortnite video.