The revenue that fintech companies generate from issuing credit builder loans can vary widely depending on various factors, including the specific terms of the loan, interest rates, fees, and the volume of loans they handle.
Exact figures would depend on the specific fintech company, its business model, and the market it operates in. If you're interested in the financial specifics of a particular fintech, you would likely need to refer to their public financial reports or contact them directly for that information. Keep in mind that industry practices and regulations may evolve, so the revenue models could change over time.