Installation isn't a MAUI feature - it's a function of the target platform.
For Windows, you can install your packaged MSIX file via the App Installer system.
See Publish a .NET MAUI app for Windows for information on how to publish your MAUI app as a Windows MSIX
See App Installer file overview for information on how to create and use an App Installer file to distribute an app via your web page link.
MAUI publishing for Windows is not yet available directly in Visual Studio. You will need to publish from the command line and then Create an App Installer file manually