Is the sentence "Let's rock the world" correct?
The intention is to communicate to a friend that we together will do a great business and make lots of money
To rock someone's world is an idiom which means that something is so amazing that they will definitely like it. For example - This latest tesla model is so good that it will rock your world. But i guess you can also use it if you want to tell that you want to shake the world in some way with a great business idea. Like - With our business plan, together we can rock the world! I hope that i answered your question.