How to enable guest checkout with Paypal

Under the paypal payment there is not an option to just enter a credit card number, it require you to sign up with paypal. Is there away to add where they can just enter a card number without signing up? 

Use PayPal Pro, it comes with a built-in credit card fields where your users can enter their card straight from the form.

However, if you only want to enable guest checkout, check this guide from Paypal https://www.paypal-community.com/t5/About-Business-Archive/How-to-Enable-Guest-Checkout/td-p/607988.