Help with Xcode game.

Why not ask on the developer forum?

Developer Forums

Also, note that you will need to pay $99 to put it on an iPhone, which seems like an expensive joke.

Get XCode. It has all the presets you need.

Did you ever find the advice for creating a bingo game type of app with xcode?

Using HTML5 and Javascript, or using something such as emscripten or cappuccino that compiles into or translates into Javascript, would allow you to write and run various games, as that can be invoked from an iOS device without requiring on-device development. Using this approach, you can download and execute the game in the browser typically using the canvas tag.

This claims to be a Javascript Bingo game. There are others around.

For on-device development using Xcode and Objective C or Objective C++ or mixed with Lua or whatever else, you'll need Apple developer program access. The various developer programs available get you the digital certificates necessary to load software onto iOS devices. (Without those certificates, you're largely limited in what can be loaded and run in Safari.) Program access can potentially be acquired through your school, and can be acquired through enrollment and paid membership in the Apple iOS developer program, or (not applicable here) paid membership in the Apple enterprise development program.