To link your bank account to PayPal, you can follow these steps:

1. Go to Wallet on the web or Settings on the app.
2. Click or tap on Link a bank or Banks and Cards.
3. You can either enter your bank login details to link your bank instantly or enter your bank account number and routing number manually. Both numbers can be found on your checks or from your bank's customer service.
4. Click or tap on Agree and Link or the plus sign (+) to finish the process.