Good news/bad news.
The good news is you can get at the Airtable data from JavaScript by referencing the window.records object. That’s a tree of objects that will have all the Airtable data that was loaded into the page.
The bad news is that this is an undocumented feature of Softr and it’s about to change. I’m not clear what the impact of this change will be - it might not really matter for your purposes. You can ask specific questions on that thread.