so i just got a used MK3 with no serial number on the back of it im left on a production and preformance system screen any chance anybody knows of anything i can do
Usually the seller has to provide a license transfer ID. If you for whatever reason cannot obtain this ID from the seller NI support can sort this out but you will need a proof of purchase and a picture of the serial number on the device. As you can‘t provide this picture this process of registering is likely to fail. But I suggest to contact NI support anyway maybe they can help despite the missing picture.
Third option would be to buy Maschine software at full price. You will need the 99€ option: Maschine 3 software
Here are some hints about second hand NI hardware:
Buying or Selling a Native Instruments Product Second-Hand
And some information about contacting support:
How to contact NI Support