I uninstalled the music maker and reinstalled it I try to enter the code the key I have in the email I put it and it does not press activate what happens
There is no point at all in SHOUTING! All that will achieve is that other users will most likely feel disinclined to help you!
Looking at the various screenshots you have posted I see one or two things that need you to explain:
On the screenshot showing the "Start Music Maker" screen, you clearly have not even logged in. Why? Did you follow the advice that @SP. gave? What happened when/if you pressed the blue Log In button?
A later screenshot shows an error message connected with "MAGIX PC Check Tuning 2021". This app is an optional add-on which you must have allowed to install when you originally installed MM. It requires a separate serial number to that for Music Maker, hence the error message I suspect. However, you do not need that app and so can safely uninstall it if you do not wish to use it Whether or not it is present on your computer will not affect whether MM can run successfully.
In terms of your original question in this thread, the first reply from @SP. asked you to post a screenshot of your audio settings. Why have you not done this?
Also, are you aware that your personal email address is clearly visible on the screenshot of that error message? You would be well advised to remove or obscure it!