DoubleDown Settlement (online gaming)

I received a check from the settlement of the DoubleDown online gaming. I have not received any tax forms. The letter that I received with the check states the following:
The Settlement Administrator cannot provice tax advice. You may want to consult your tax advisor regarding the tax treatment of this Settlement Payment if you have any tax-related questions.

 

Question: Do I have to report on my taxes and if so, how?

Thanks in Advance.

John Huffman