How can I use a new form I made (form3) to display the high scores for Red and Blue team in their respective listboxes?

When the user pushes the spacebar or clicks on the menu "High Scores"m I need the code to be something like:

Select Case...
Case keys.Spacebar
ScoreRed.text += RedListBox.line1
ScoreBlue.Text += BlueListBox.line1
Or something

The teacher gave me this confusing mess of code to use, in which I make a notepad file with an odd file extension and save the scores there, but I don't like that way. Well it would be nice if there was an ultra easy way to do this! Please help!