commerce-8.x-2.8/modules/payment/commerce_payment.permissions.yml

administer commerce_payment_gateway:
  title: 'Administer payment gateways'
  'restrict access': TRUE

administer commerce_payment:
  title: 'Administer payments'
  'restrict access': TRUE

administer commerce_payment_method:
  title: 'Administer payment methods'
  'restrict access': TRUE

manage own commerce_payment_method:
  title: 'Manage own payment methods'