Create a variable of unknown script

Questions & Answers
1

I have a common script for objects and additional ones. I need to make it possible to access an additional script through a common script, but the additional script must be defined in the unity editor.

That is, how do I contact and determine an unknown additional script in a common script?
Is it possible?

2

yes it is possible. Create a singleton in additional script and access it through the common script.