1. First, click on "Company Settings"
Hover your mouse over your name in the top right corner and click on company settings in the menu that appears.
2. Then, click on "Billing"
On the left side, you will find "Billing" under "System," which you should click on.
3. Your information
Here, you will find the complete billing information for the account.
4. Choose invoice email
Here, you can change the email to which the invoice should be sent. Remember to click save.
And that's how you access your billing information. You can always adjust and make changes to it.