Dreams about financial situations, especially those involving scams or illegal activities, often reflect deeper anxieties about trust, security, and the consequences of one's decisions. In your dream, the investment in a scam could symbolize feelings of vulnerability or fear of being taken advantage of in your waking life. The large profit might represent a desire for quick success or the allure of easy gains, but the subsequent investigation suggests a conflict between your ambitions and your morals or integrity.

Your admission of guilt, despite initially claiming innocence, could indicate inner turmoil regarding a decision you've made or a situation where you feel compromised. It may also suggest a fear of being exposed or judged by others. Worrying about warning others reflects a sense of responsibility and the desire to protect those you care about, highlighting your empathetic nature.

Overall, this dream could be encouraging you to reflect on your current choices and the moral implications behind them. It might be a call to ensure that you are aligning your actions with your values and to be cautious of situations that seem too good to be true. Consider how you can seek transparency and integrity in your financial and personal decisions moving forward.