utilize the trial period of 3rd party importer tool

https://transactionpro.grsm.io/qbo

https://partners.saasant.com/affiliate/idevaffiliate.php?id=5051_2

Hello there, @justintee16.

As of this time, the option to upload sales and expenses in bulk isn't available in QuickBooks Online. However, you can consider @plung's suggestion to import your sales and expenses.

You can also go to the Apps menu and find a third-party application from there. Here's how:

1. From the left menu, click Apps.
2. Search for a keyword in the Search bar, like "Data Importer."
3. Find and select a third-party app, then click Get app now.

Or you can go to our Apps Center to find a third-party app. Here's the link: https://apps.intuit.com/app/apps/home.

You might want to read this article to learn more about importing data in QuickBooks Online: Common Questions about Importing Data to QuickBooks Online.

In case you need tips and related articles in the future, visit our QuickBooks Community help website for reference: QBO Self-help. 
 
Feel free to visit us again if you have any other questions with QuickBooks. We're always here to help.