I have taken number 1 out & it was dry so does that mean the injections are not working
Well fuel is wet, so yes.
Have a listen to the #1 injector for a clicking sound which indicates it is being order to operate by the ECU.
If you hear it and your #1 plug is still dry, well that indicates no fuel is squirting into the cylinder.
In that case it can mean your injector is blocked or no fuel in in the fuel rail (pump not working, line blocked, ect, etc).
But you haven't mentioned any detail about where you sourced the replacement motor and from what vehicle. If the replacement motor was sitting unused, all the injectors could be blocked, bugs could have crawled into the fuel rail (if it was disconnected)or a myriad of things could be wrong. Maybe the motor never worked. So was the repalcement engine running, did you hear it runing, did you check everything before the install or just plonk it in and hope for the best?
Not meaning to sound harsh as i'm sure things were done but it's difficult to advise/help without knowing any background to the problem or history of what you've done to correct the issue. More info will be helpful.