Stripe works by adding credit card fields on the checkout and then sending the details to Stripe for verification.
You need to Enable Stripe. You will have to then enter the title and description.
You will have to get the API keys from your Stripe Account.
If enabled, this option shows a "pay" button and modal credit card form on the checkout, instead of credit card fields directly on the page.
If enabled, an option to accept bitcoin will show on the checkout modal.
Note: Stripe Checkout needs to be enabled and store currency must be set to USD.