When you refer a creator to PlayHouse, you earn 7.5% of their earnings for the first 365 days. There's no limit to how much you can earn from a single referred creator, nor is there a limit to the total earnings from all your referrals. However, if a creator signs up without using your referral code, we can't link their account to your referral retrospectively as it's an automated process.
You can find more details in the "Referral Program Terms" section of our Terms of Service.