The Home Button on the iPhone 7 isn’t really a button. It’s a circular touch and force sensitive area which, thanks to the Taptic Engine, feels like a button that clicks.
Since the click you feel when you press the Home Button is caused by the Taptic Engine’s vibrations, you can change it. There are three subtly different clicks to choose from.
To pick one, go to Settings > General > Home Button.
Select either click 1, 2, or 3. Press the Home Button to test each one out.
My favorite is click number 3. When you’ve decided which one you want, tap Done. Now whenever you press the Home Button, that’s how it will feel.