Could someone tell me how to get promoted to career level 5 in entertainment thanks?

To advance in any career, it'll show you on your skills list what you need to improve on. For entertainment, you usually need a lot of charisma, so you might need to work on that. You'll also need to have a lot of friends. But if you look at the skills section, it'll tell you exactly what you need to do to advance to the next level. If you have everything completed and you still can't advance, it might just be because you need to move out and go to the next location first.