Use iPhone as a Wi-Fi hotspot
Use Instant Hotspot
You can use Instant Hotspot on your iPhone or iPad (Wi-Fi + Cellular models) to provide Internet access to iPod touch and your other devices where you’re signed in with the same Apple ID. (iOS 8, iPadOS 13, OS X 10.10, or later required.) Instant Hotspot uses your iPhone or iPad Personal Hotspot, without you having to enter a password or even turn on Personal Hotspot.
Go to Settings , then tap Wi-Fi on your iPod touch.
Below Personal Hotspots, choose your iPhone or iPad network.
On your Mac, go to System Preferences > Network, then choose your iPhone or iPad network from your Wi-Fi settings.
When you’re not using the hotspot, your devices disconnect to save battery life.
Note: This feature may not be available with all carriers. Additional fees may apply. Contact your carrier for more information.