How do you download WhatsApp?

Greetings charnique208, 

We’re including below two articles on how to download available apps from the App Store. One is for iOS and iPadOS and one is if for macOS. Keep in mind, not all iPhone apps are available for iPad and vice versa. Similarly, not all apps available for macOS are available for iOS/iPadOS. 

Download apps and games on your iPhone or iPad

Download apps from the App Store on your Mac

Should you have questions about availability not answered in the details in the App Store, you can reach out to the app's developer. Here's how to find support for an app - How to contact an app developer

Thanks.