Complex sentence: Each bitizen has a skill level out of 9 for each category of commercial floor, showing how good they are at each floor, so the user is encouraged to tailor each bitizen to a floor they are most suited to.
Split into simpler sentences: Each bitizen has a skill level out of 9 for each category of commercial floor, showing how good they are at each floor. This encourages the user to tailor each bitizen to a floor they are most suited to.