To get a payment gateway from pay pal you have to follow few steps.
Step1:- Visit Paypal.com and then click on signup. This should open a form. You will have to fill all the required details in the form. Once done you will have options to upload KYC documents and verify the bank account.
After the completion of the steps paypal after some time may approve your account
Once account is approved then you may start using the gateway.
Integration of PayPal gateway on your business website should be easy. Basic HTML integration is the easiest one.