Settings > Integrations > Stripe
In order to accept payments, you must connect your workplace to your Stripe account. If you don't have a Stripe account you can sign up at https://stripe.com or you can sign up for Stripe during the setup flow.
Click on the connect with the Stripe button and either create an account or log into your current one. After you complete the steps you will see a message notifying you that your workplace is now connected to Stripe.