I created an app that has multiple screens and and due to some limitations I could not use a Form so I added individual inputs. I have seen a lot of posts to send data to SharePoint using patch from one screen, but I have no idea how I would do it between multiple screens. So the user would fill out the first page inputs then click next and there would be more values to fill out before hitting submit. The data would then go to SharePoint as one line item. My thought process would be to patch the first screen and at the same time pull the ID and pass it to the next screen to allow a patch to the same line item, but I am new to PowerApps so don't really know how or if this would be best practice.
An example I found for patching without forms:
'Your SP List',
Defaults('Your SP List'),