According to the Federal Trade Commission, "The Fair Credit Reporting Act (FCRA)requires each of the nationwide credit reporting companies — Equifax, Experian, and TransUnion — to provide you with a free copy of your credit report, at your request, once every 12 months." The source that's authorized by the federal government for these reports is https://www.annualcreditreport.com. It's a straightforward website, not one covered up with a bunch of scammy offers torepair your credit, etc.
https://www.annualcreditreport.com is now offering free WEEKLY credit reports. As the website says on its home page, "During these times of COVID-19, accessing your credit is important. That's why Equifax, Experian,and TransUnion are now offering free weekly online reports through April 2021." Because of the importance of having good credit, not just for buying a house, but for life in general, this is a good opportunity to stay up to date.