Presumably, your PayPal should be connected to your ecommerce store. Therefore, you should find the integration for your ecommerce store and connect it to Klaviyo.

In the event that’s not the case, there is no native PayPal integration. You’ll have to use a 3rd party like Zapier or Make. Or if you have developer skills, you can create your own integration and access the events via the PayPal and Klaviyo APIs.