It is possible that you don't hear sound when playing back a MIDI region in Logic. We recommend the following:
Check the audio output device in Logic
Make sure the current settings will route to your speakers or headphones. This is done by navigating to Logic Pro X > Preferences > Audio > I/O assignments > Output.
Check the audio output routing for the Arcade track
Verify that there are no other muted or soloed channels and that there’s a clear path to the master output bus.
Verify that you are starting your playback at the beginning of the MIDI note
MIDI is not audio, it is a signal that triggers audio to turn on and off. The beginning of the MIDI note contains the 'Note On' signal. When you click play from the middle of the MIDI note, the 'Note On' signal is not delivered to your instrument, and no sound is produced.
There are a couple of workarounds you can try within Logic. Here are some Apple Support guides for reference: