Your original DW has a datewheel overlay (DWO) glued onto it to shift the dates 1mm left into the Rolex date window position.
You will need to transfer the Noob DW + DWO combined part onto your new movement. This is normal as new ETA or ETA clone movements usually do not come with a Rolex font DWO.
The screw that is partially covered by the Noob DWO is for the minute train bridge beneath it. It is in a most unfortunate place relative to the DWO and can be a significant PITA to deal with. The screw can be loosened by accessing half the slot at a time, loosening it half a turn then access the other half of the slot, another half a turn, rinse and repeat.
Then the screw will back out but the head will butt up against the underside of the DWO. So you have to gently wiggle, jiggle and finagle it loose with tweezers while maybe still unscrewing it a tad to detach it completely from its threaded hole. All the while not bending, scratching, denting, defacing or separating the DWO from the DW.
If all of that sounds like fun, just wait till you get to replace it on the new movement. You have to do the same steps in reverse. It's even worse because the DW has to catch a concealed lip on the outer perimeter of the minute train bridge leaving very little vertical space in which to reinsert the screw underneath the DWO. It has to start into the hole on an angle and then be finagled upright but it's too long to fit under the DWO. Fun fun.
If you take on any of this, you should have a thorough understanding and some practice in how the DWs are attached and operate. You can get this practice on your new movement since its DW has to come off anyway. There are plenty of You Tube videos on this topic. Then you can try to remove the Noob combined part and see how it goes and go from there.
It's also possible to scavenge the DWO off the Noob DW and reglue it to the new movement DW with that DW still in place, but this task involves it's own hassles and pitfalls and would not be substantially easier for a casual hobbyist.
Some threads on that below.
Quick and Dirty DWO Alignment
Gen or Gen-spec DW as a DWO
Note: There is also a way to first fasten the minute train bridge and screw, hook the DW/DWO combined part under the minute train bridge lip and then seat the combined part on the opposite side of the movement.
This assumes a thorough understanding of how the DW meshes with these two parts - the date jumper plate and the double jumper. You can line up the DW teeth rotationally so it will lay partially down into the date jumper plate. Then insert a tiny screwdriver or even a straight piece of paperclip under the DW to (almost blindly) depress the double jumper's bottom spring inward. This will allow the DW to begin to seat fully. Keep downward pressure on it and slide the screwdriver out to let it seat fully home. Then you need to immediately rotate the DW anti-clockwise so it catches under the jumper plate and doesn't just pop right back up and out.