To sign up in PayPal, click on the link here
Go to your store dashboard then click on Payment

Toggle on the Online Payment
Click on Settings
Click on Add payment provider
Choose PayPal (If it doesn't appear click on view all)
In summary, You'll find the supported countries and cards, then Integrate

These are the requirements you need to fill on your store from your account on PayPal
Log in to your account in PayPal
Follow the below steps and you'll find the requirements
Go back to your store, activate the button, fill in the required info, then Next
Activate the buttons, then Finish
