This is how I set it up in Android.
Put it above your MainActivity.cs
[IntentFilter(new[] { Android.Content.Intent.ActionView },
Categories = new[]
{
Android.Content.Intent.CategoryDefault,
Android.Content.Intent.CategoryBrowsable
},
DataScheme = "http",
DataPathPrefix = "/tesla/",
DataHost = "exrin.net")]
This logs activity when the application is installed. Change the URL to the desired URL.
Android ( iOS) Nuget Xamarin Forms AppLinks
OnCreate , Xamarin Forms Init
AndroidAppLinks.Init(this);
, URL- ( http://exrin.net/tesla), :

, , URL- URI. App.cs(Xamarin.Forms.Application)
protected override void OnAppLinkRequestReceived(Uri uri)
{
base.OnAppLinkRequestReceived(uri);
}
URI, , URL-/
Xamarin Forms AppLinks