I want to assign array values ​​from another script to a variable. Why gives Null Ref?

Question

C++ / C#

There is a variable A, whose value is equal to the first element of array B. Array B is stored in another script.
I'm trying to get info using GetComponent

otveDrugScr = gameObject.GetComponent<Playzadacha>().praOtvetiMidLvl1[1];

NullReferenceException: Object reference not set to an instance of an object is the error it gives me. I don't know what's the problem. If the mistake is stupid, I apologize. I am new to C# and Unity.

Answer 1

1) there is no Playzadacha component on the object;
2) praOtvetiMidLvl1 array has not been created.