Hi @aiden12114 ,
Looks like you can’t from the Aust. store but you can from the USA store Click on Fix kit and select part only.
You can also click on Store at the top of the this page and select the Ifixit store for the USA or the other countries shown to see what products are available from them, but the USA store is the only one where the Pixel 4 screen is available as a separate part without the tool kit.
Exchange rates, shipping costs and time may influence whether to try this option or not.
Here’s the Ifixit International shipping FAQs that may help. There’s also a Contact us link at the bottom of the page if you wish to contact them.