Hi @TIANYUAN HE
You can view your invoice for your Microsoft business subscription in the Microsoft 365 admin center.
For more details please refer to View your invoice in the Microsoft 365 admin center
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.