How can I remove the Square integration on my form and replace with PayPal?

The person who set this up set the payment for square. We do not have a square account. We have paypal. How can I change this in the existing form? Do I need to have you unlock paypal? How would I go about doing this?

You can try removing Square from your form on the form builder. Simply select the Square integration and click on the Trash icon (delete). After removing Square, you can go ahead to integrate PayPal. This is because one form is allowed to accommodate only one payment app integration. 

See image below to remove the Square integration:

Once this is done, you can follow the steps by step guide on How-to-Integrate-Form-to-PayPal-Checkout or How-to-Integrate-Form-with-Paypal-Standard. 

Please, let us know if you need anything else.