All eBay sellers must offer PayPal as a payment option, with the exception of a few categories.
To start, link your PayPal account to your eBay account. If you use different email addresses for PayPal and eBay, make sure you’ve linked the correct account.
When a buyer checks out using PayPal, you’ll receive the money directly to your PayPal account. In most cases, payment to you is immediate.
Learn more about using PayPal