There are still 4 days left in the jam, that's more than enough time to make some additions and improvements!
You should try to add a bit more to your game, and use some assets to improve it visually. I completely understand how difficult it is as a beginner (I only started learning Godot in October and I remember the first few weeks where nothing made sense to me), so try to find a few simple ideas to add just so there is more gameplay, as right now it just seems like a very basic walking sim with nothing to do.
And as others have said - try to find a gameplay loop. The games in a game jam are generally very short, so the way to keep the audience entertained is to add a gameplay loop. For an example of this, Vampire Survivors started out as a game jam entry. So even adding something as simple as having a timer and things to collect, and seeing how fast the player can collect them can create a gameplay loop.