Then you’ll need to use local storage. You can save each bit of data individually - a bit more cumbersome but easier to follow - or write it all to structure variable and store that as json - quicker but trickier to work with when you first start out with GDevelop.
Here’s a brief explanation of it in another post. If you get stuck with that, screen shot your events as they are now and someone should be able to help you to get it working.