Thanks for sharing your thoughts here in the Community. At the moment, the option to run a report with a single bill entry is unavailable.
As a workaround, you'll want to run a bill report and manually check if it's for single entry.
Your feedback about having this kind of report is highly appreciated. To inform our engineers about it you can send feedback within your QuickBooks Online company file. This way, we can make our program better.
Let me guide you on how to send feedback:
Click on the Gear icon.
Then select Feedback at the top.
Enter your comments or product suggestions.
Hit Next to submit the feedback.
We'll make sure our Product Development team knows so we can help improve your experience in QBO. Also, you can track feedback requests through our webpage: QuickBooks Online Feature Requests.