Building a Cart function for a Softr/Airtable powered B2C marketplace

Hello!! I have built a really simple MVP B2C marketplace using Softr and Airtable. Its a marketplace dedicated to mens sustainable fashion.

We just need to now build a payment process using stripe. I've watched a bunch of videos and can't work out how we create an order flow that will allow customers to buy multiple products and how to link Stripe to airtable to Sortr and vice versa to make it happen!

Neither me or my other partner have any tech background and have not done this before. I am sure this is super simple - we just need some step by step help on how to do it (basically a like Stripe for dummies!)! Any help would be MUCH appreciated!!!