How often is stETH paid?

Could you please clarify the frequency of payments for stETH? I'm trying to understand how often these payments are made and how they might affect my investment strategy. Is it a regular monthly payment? Quarterly? Or does it depend on certain factors? It would be helpful to know if there's a set schedule or if it varies based on market conditions. Additionally, are there any penalties or fees associated with these payments? Understanding these details would greatly assist me in making informed decisions about my crypto holdings. Thank you for your assistance.