If you just finished making a game and are ready to add a playable version of your build to your GitHub repository then just follow these few steps!
To start, you need to “Build” your game.
To do this, just select “File>Build Settings” and after verifying that your settings are correct, and your scenes are added, just hit “Build”.
Then once you have the file built, compress it into a “Zip Folder” by right-clicking on the file and selecting “Send To>Compressed(Zipped) folder”.
Now go to your GitHub Repository and select “Releases” on the right-hand panel. You can enter a version number, project name, and description here. Once you’re satisfied, drag in and drop your compressed project folder at the bottom and select “Publish Release”.