Yes, you can buy and sell Bitcoin on PayPal. There are a few things to keep in mind when doing this, however. First, when buying Bitcoin on PayPal, you will need to have a balance in your PayPal account. You can do this by linking a bank account or using a credit/debit card.
Second, when selling Bitcoin on PayPal, you will need to have a verified PayPal account. This means that you will need to provide some personal information and link a bank account or credit/debit card. Finally, when buying or selling Bitcoin on PayPal, there is a fee involved. The fee is usually around 3% of the transaction.