If you'd like to wipe Windows 10 and start from scratch, you can do so by follow these steps:
Open the Settings app by pressing the Windows key + I on your keyboard.
Click on Update & Security.
In the left pane, click on Recovery.
In the right pane, click on the Get started button under Reset this PC.
You'll be presented with two options: Keep my files or Remove everything. The former will preserve your personal files and settings, while the latter will wipe your hard drive clean. Choose the option that best suits your needs.
Once you've made your selection, click on the Next button.
On the next screen, you'll be asked to confirm your choice. Once you're ready, click on the Reset button.
Your PC will now begin resetting itself. Once it's finished, you'll be back at the initial setup screen where you can begin the process of setting up Windows 10 from scratch.