Looking at your simulation parameters you roughly have the right idea. Just a couple of things. The propeller itself should just be a wall boundary condition. Think of your rotating zone which you have correctly defined as the “rotating” action of the propeller. What you’re doing by defining a moving wall velocity is essentially rotating a already rotating propeller which is not what you want I assume so setting it to wall will fix that.
Next is your inlet conditions at the wall. What do you want to measure? Just the pure performance of the propeller in a static environment? Or is there some inlet you want to consider?
Thirdly and probably most importantly, what is the fluid your propeller is operating in? Currently you have set your medium to a default setting which may produce weird results. You set defined fluid mediums by selecting material and importing from the material library. After which you can adjust the density or whatever other parameters to your needs.
Lets try to fix these issue first before moving on to accuracy of the results.