The steps to download this game on Apple phones are as follows:

1. Open the App Store and click the "Search" icon in the lower right corner.

2. Enter "Delicious Pizza" in the search bar and click search.

3. Find the "Delicious Pizza" game in the search results and click the "Get" button to download. It should be noted that due to some reasons, the "Delicious Pizza" game may not be downloaded normally in the Apple App Store in mainland China. If you are a new user, you may need to register an overseas Apple ID to download games.