You can not add Unity Scripts to Addressable.
https://discussions.unity.com/t/can-we-make-a-script-an-addressable-in-unity/236090 https://discussions.unity.com/t/adding-scripts-to-addressables/845604
The general use of Addressable is only for Images, Sounds, other resources, and load it to your prefab or script on runtime. you should include the scripts in the build file.