This game is pretty fun. It reminds me of those restaurant management games where you're rushing between tables delivering food to customers. The low framerate is a little annoying but it's probably just a quirk of how the game was exported so I wouldn't worry about it too much. Considering this is your first game, I'm really impressed and I look forward to seeing what else you end up making in future :D

If you're looking for ways to improve on this game, I have a couple suggestions:

- Sometimes a pipe will break off-screen meaning the player will be unsure of where it came from so it would be nice if there was some indication of where the broken pipe appears. A subtle way of doing this could be to make the pipe breaking sound effects directional so the player can hear where they are coming from (you can do this in Godot using AudioStreamPlayer2D nodes). A more inclusive method for people with hearing issues or who are not wearing headphones could be to have some visual indicator (like an arrow for example) pop up on the screen somewhere that points out where the broken pipe is.
- I may be misunderstanding but, from what I can see, it looks like the way the game works is that each broken pipe has it's own timer and if that part of the pipe is not fixed before the time runs out, then you get a game over. I noticed that there is a red flash on the screen that I assume is to warn the player that they were running out of time but without any indication of which leaky pipe is running out of time, it isn't very helpful. Instead of just having the screen flash red, it may be more helpful to the player if the sprite of specific pipe that was running out of time started flashing instead. This way, the player will know which pipe is the problem so they can go and fix it.

Sorry if that's a lot of words to read, feel free to try implementing my suggestions or to completely ignore them if you don't agree with my assessment. It's your game so you have full authority on what is and isn't a good idea for it :3