To make an online store for the delivery of products. Connect PAYSERA - its an online bank, VISA, MASTER

Good afternoon!
My experience only in drawing - logo, business cards, banners...
I have an order for a website (an online grocery store) and a mobile app turnkey.
Im just designing.
All the rest of the work needs to be done. In particular, the customer is interested in connecting various payment systems PAYSERA - it is an online bank, VISA, MASTERCARD.
Budget for the work of a programmer 200 euros
Link to the site layout: www.figma.com/proto/Z3HZg...