Use left/A and right/D to move the "Bat", and hit the "Ball" to get more points. A good strategy to get more points is to find a run where the ball always lands in one area, stay there, and enable Turbo Mode. I wanted to fix this but I couldn't. Cursed collision programming...
I haven't used Scratch since late into my middle school years and now I'm in my senior year of highschool. This was done to see if I could make a basic game with my current skills. Music is "Sparring Match" by anothermedian, which you can find on SoundCloud and Bandcamp. They make good music.