Reliable score and schedule data for free is notoriously hard to find, at least in an easy-to-grab format. That's true until you have experience with APIs, and/or JSON formatted files, and/or scripting and scraping. There are lots of tutorials on the web about all of those, and they are better written than anything I could ever create here.
Idea #1: there aren't that many games each day, and so you might resort to manual input of the games each morning or every few days. (I've done it; it's a few minutes every morning; not the best, not the worst.)
Idea #2: each league should have a score API that you can find (that score apps pull directly from) and download from. Usually, this data will be in JSON format, so you'll need a little bit of coding experience. Details on how to find these API "endpoints" can be found scattered around Github, Reddit, Stack Exchange, and other places... but the leagues don't publicize them.
Idea #3: [in 2024-25, I might have a text list of scores available on my own website. If I have time to write the scripts to make that happen, I'll update here.]
Idea #4: there are several paid services out there, such as National Statistical [not an advertisement] which would do much of the work for you.
Option: I do share the score files that I use on my own ratings site -- navigate to the Explanation tab. (Warning: quality control, finding duplicate games, etc., are pervasive problems, for all of us. I'm sure there will be an error or two in my files.)
Option: Kenneth Massey makes Scores & Schedule Data available for college football on his ratings site (it's in the list of links, usually near the bottom).
Ken Pomeroy offers a text file of all Division I men's college basketball scores each season, for easy parsing and manipulation. It's been my go-to for 20 years. He updates it once per day. (If you have a subscription to his site, you can also get daily schedules and see day-of-game scores within an hour or two of a game going final.)
Here's his file for 2022-23: https://kenpom.com/cbbga23.txt. Edit the file name to find a different season.
Also for 20 years or more, John Kean at Missouri S&T has been collecting daily men's scores for the D2 ranks as part of the Division II Men's Basketball Home Page. Also includes tournament information, news, and much more. The format is old-school web, but it's chock-full of good info.
And for almost that long, D3Hoops.com has been in the scores and standing business. A great site for news, too.
[more coming soon]
• Want to create your own ranking?
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• ...including this author's?
• More to add here...