How to Make url parameter to call data from My DB

I have url :

https://localhost/product.php?id=1

I want to call data like my above url when id change the data coming from my db also change on screen.
I searched on wappler docs too but i can’t understand how to do that.

Watch the above screenshot when buy button is clicked it show pass id to url and according to id it should show that from from my db