Can not download fitness app to my ipad

First, update your Watch to watchOS 7.2 and your iPad Pro to iPadOS 14.3

Here's what you need

• Make sure that you have an Apple Watch Series 3 or later and an iPhone, iPad, or Apple TV that's compatible with Apple Fitness+.
• Have your Apple ID and password ready. And make sure that two-factor authentication is set up for your Apple ID.
• 
  

How to subscribe to Apple Fitness+ on your iPad

1. Download the Fitness app from the App Store.
2. Open the Fitness app.
3. Tap Get Started.
4. Tap the trial offer (one trial per person or family).
5. Sign in with your Apple ID and password. Forgot your Apple ID?
6. Verify your billing information and add a valid payment method.
7. Tap Subscribe.

I am also from Melbourne, I just did a search using my iPhone and my iPad Pro and it's there.

FYI: You have to update your iPad to iPadOS 14.3 to see the Fitness+ app.

Check your iPad's Settings > General > About > Software Version > here ???

If it's not 14.3, you need to update first.

Also make sure your Watch has watchOS 7.2 installed.

iPhone' s Watch app > My Watch > General > About > Version > here ???

Are you using Apple App Store app on your iPad to download the app?

You can't download app using Google search.

Where are you from?

Open App Store app on your iPad then do a search in there "Fitness +" without the quote.

You're welcome.