Blender Fluid Simulation Problem

Hi, I have a problem, I want to make my first fluid simulation in blender but when I do everything same like in tutorials I watched it didn’t work.

Old tutorials can be a problem. If you are new to the fluid system, Open Blender and choose Object/Quick Effects/ Quick Liquid. This will convert the default cube into a fluid simulation. Work backwards from there to determine what you did wrong.

At a glance, I think you might need a default cube for your domain. From your screen shot, it looks like you are trying to convert your collision surface into a domain…?