If you mean Finance Square, it’s mainly a financial-planning/investment service, not an app that simply pays you for using it. It offers things like mutual funds, portfolio management, bonds, and insurance.

General ways people can earn from finance:

💼 Finance jobs/freelancing — accounting, financial analysis, bookkeeping, etc.

📚 Learn finance and build a career — banking, investment analysis, financial planning.

📈 Investing — investments can potentially grow over time, but they can also lose money.

🧑‍💻 Finance content/education — creating educational content or tutoring.

Since you're under 18, actual investing or opening financial accounts may require a parent/guardian and depend on local rules.