What is xxxtentacion tree?

XXXtentacion did not have a literal "tree" in the sense of a family tree or a specific tree he was associated with in a symbolic way. However, it's possible you might be referring to fan theories or interpretations surrounding his life and death that use the tree as a metaphor. If you are searching for the family relations of the artist, you can explore his family using the link: XXXtentacion's%20family.