How do I run a report on just my checking account for a period of time?

I'll help you run a report with only your checking account, @TerryS54.

A great way of tracking your daily business's performance is by running a specific report in QuickBooks Online(QBO). We can customize this report to meet your needs. Let's run a Transaction Detail by Account report and customize it to view the daily cash balance of your checking account. 

Here's how:

1. On your Reports tab, run Transaction Detail by Account 
2. Select Customize and set the Accounting method to Cash.
3. Enter the desired Report period.
4. Expand Rows/Columns, select Day in the Group by field.
5. Click Change columns and check at least Account, Amount, and Balance. Reorder columns as needed.
6. Navigate below to Filter to add the Transaction type.
7. Click Run report and Save customization for future use.

Additionally, you can export your report to Excel if you want to use your reports outside of QBO.

Finally, you can memorize your report to save the current customization setting for future use.

If you need further assistance running reports in QBO, kindly comment on this thread. I'm always here to assist you.