It's technically impossible to skip the level — you have to win to progress further. You have to pass a fixed number of levels to finish an in-game day, and skipping levels would simply result in not earning enough stars to finish all the tasks.
If you're stuck, don't give up! It's totally possible to beat any level even without using tools and power-ups, and your rewards for hard and super-hard levels are significantly bigger. Here are some tips we have that can help you succeed in a tricky level. We're sure you'll get through!