How can I use Python to read data from a CSV file, calculate the average value of a specific column, and then write the result to a new CSV file?

Details:

I have a CSV file named "data.csv$"$ with columns labeled "Name", "Age", "Score".

I need to calculate the average value of the "Score" column.

I want to write the result to a new CSV file named "average$\_$score.csv$"$ with a single column labeled "Average Score".

Can you provide a Python script to accomplish this?