There is no definitive answer to this question, as the "most important" details on your credit report will depend on your financial goals and situation. However, some commonly cited factors that may significantly impact your overall credit score include payment history, outstanding debt balances, length of credit history, and recent inquiries into your credit history.
Additionally, any inaccuracies or errors in your credit report can significantly impact your score, so it is essential to review your report carefully and dispute any errors you find. Regardless of the specific details in your credit report, remember that maintaining good financial habits and regularly checking in with your overall financial health are the keys to achieving long-term success. So, start by reading your credit report carefully and taking steps to improve any areas of concern, and you can rest assured that you are on your way to financial success.