Complete novice at mushroom identification but this RESEMBLES chicken or hen of the woods, but I suspect it's something inedible. This was found in the woods behind my house. I don't go in them very often because it's very steep and poison ivy abounds.

It's been IDed as a black staining polypore. Not poisonous, but tough on the teeth. https://foragerchef.com/the-black-staining-polypore-meripilus-sumstinei/

Meripilus sumstinei (formerly M. giganteus)