The report is the story, the score is the grade
Think of your credit report as a detailed history of how you have borrowed and repaid money. It lists your accounts, balances, payment history, the dates things opened and closed, and any collections or public records. It is raw information, line by line.
Your credit score is a three-digit number, usually between 300 and 850, that summarizes all of that history into one quick read of risk. The report is the full transcript; the score is the grade a lender sees at a glance. One feeds the other, which is why you cannot really understand your score without reading your report.

Who creates each one
Three national credit bureaus, Equifax, Experian, and TransUnion, each build and maintain your credit report. Lenders report your activity to some or all of them, so your three reports are often similar but rarely identical. An account on one report might be missing from another.
Scores are calculated by separate companies, mainly FICO and VantageScore, using the data in those reports. That means you do not have one single score. You have many, because each bureau's data can differ and each scoring model weighs things a little differently. The number your car dealer sees may not match the one in your banking app.
What lives inside your report
Your report is organized into a few main sections. There is identifying information like your name, addresses, and employers. There are your credit accounts, often called tradelines, showing each loan or card with its history. There is a record of inquiries, both the soft ones that do not affect you and the hard ones from applications.
Finally there is a public records and collections section, which can include bankruptcies and accounts that were sent to collection agencies. Errors can appear anywhere in these sections, and under the Fair Credit Reporting Act you have the free right to dispute anything genuinely inaccurate. The bureau investigates and decides whether to correct it.
Why your report has no score on it
Here is a surprise for many people: your official credit report from the bureaus does not actually contain a score. The report is the data, and the score is generated separately on demand when a lender or a monitoring service requests it. That is why you can get a free report and still not see a number.
You are entitled to free weekly reports from all three bureaus through the official federal program, and those are worth pulling regularly. Many banks and apps also show you a free score, usually a FICO or VantageScore version, so you get both halves of the picture from different places.
Why you should watch both
If you only watch your score, you see the symptom but not the cause. A score drop tells you something changed, but only the report tells you what. Maybe a balance jumped, an account went to collections, or an error crept in. The report is where you find the answer and where you take action.
Watching both together is how you stay in control. The score keeps you oriented month to month, and the report lets you verify every detail is accurate and fix what is not. Lenders, landlords, and some employers may look at this information, so keeping it clean and current protects more than just your next loan.
Understanding the difference is the first real step toward getting mortgage-ready, because you learn to read your own file instead of guessing at a number. Subefy pulls your reports and scores from all three bureaus into one clear view, explains what each line means, and shows you where you stand. Estimates are educational, results vary, and no specific result is guaranteed.