How to make official localization mix strings with scripted variables?

I'm a newbie unity user who has never written a code before starting to learn unity couple weeks ago. Now i'm trying to learn how to implement a localization into game using official unity localization https://docs.unity3d.com/Packages/com.unity.localization@0.9/manual/index.html i have no problem using it for simple strings. But there is a string in my game which before implementing localization was defined like this along with the other stuff inside GameManager.cs:

     public TextMeshProUGUI scoreText;
     public int score;
     public void UpdateScore (int scoreToAdd)
     {
         scoreText.text = "Score: " + score;
         score += scoreToAdd;
     }

How to make localization for this string without splitting it into 2 different objects (one for "Score:" string and another for score value). I've tried making a smart strings in localization table like these

 Score: {score}
 Очки: {score}

etc. or like these

 Score: {GameManager.score}

along with removing scoreText.text = "Score: " + score; from my script but this way it's just displaying the first part of the string from localization table

 Score: 
 Очки: 

etc. How to make it work considering that my scripting skills are very low at the moment?