in excel- give me the right answer step by step (you have to write a code in sub) and i will give thumbs up

manually enter the word Score into cell A1, and manually enter 68 into B1

Write a sub that uses the Case Construction to do the following. If the number in cell B1 is at least 96, a message box should say, Youre a star! If its between 90 and 95 (inclusive), a message box should say, Well done! If its between 80 and 89 (inclusive), a message box should say, Satisfactory performance. And if its lower than 80, a message box should say, Try again!