Apple pre-order items refer to items that users can book or pre-order in advance before some applications or games on the App Store are officially released. Usually, when the project is officially released, the download link will be automatically obtained, and it can be downloaded and installed at the first time.

To download Apple pre-order items, you can follow these steps:

1. Open the App Store: Make sure you have logged into the Apple ID account, and then open the App Store application on your mobile phone.

2. Search for pre-ordered goods: in the search bar at the top of the App Store interface, enter the name of the goods you want to pre-order or related keywords, and then click the search button.

3. Enter the pre-order page: in the search results, click on the goods you want to pre-order. You will be taken to the details page of the project.

4. Pre-purchase project: On the project details page, you will see a pre-purchase button or similar prompt. Click this button, and then follow the system prompts to complete the pre-order operation.

5. Waiting for the official release: once you successfully pre-order the project, you will receive the corresponding notice. When the project is officially released, you will be able to download and install it on the App Store.

It should be noted that the availability and download time of Apple's pre-order projects depend on the developer's release plan and relevant regulations. Some projects may be released within days or weeks after pre-order, while others may take longer. In addition, sometimes the pre-purchased project may be cancelled or postponed, which is decided by the project developer.

If you encounter any download problems or problems related to pre-ordered items, I suggest you go to Apple official website or contact the developer for more accurate help and support.