Hello, I'm Quinn, and I'm happy to help.
I understand it can be frustrating to see that you're being asked to pay again after purchasing Minecraft on your iPhone. Unfortunately, purchases made on the Apple App Store are separate from those on Microsoft or Minecraft's PC platform, so the game doesn't automatically transfer between devices. To play Minecraft on your Windows laptop, you'll need to purchase either the Bedrock Edition from the Microsoft Store or the Java + Bedrock Bundle for PC. Please let me know if you need further assistance, I'd be glad to help you further.