Worth holding or selling?

Hi all, I haven't seen a similar post and looked for a while. I gambled, won $600 pulled out, and sent it to my coin wallet. I now have $550 something in ETH. I don't know anything about crypto and decided to buy into ETH since I didn't know the rest. Would anyone recommend leaving the $550 in there for however many years/months or even selling at its highest peak? Or just taking the win and sending it to my bank account. Thank you all