It's good to see you here in the Community, smagar,

I can share some information about bulk deleting transactions in Quickbooks Online.

May I know what items are you trying to delete? Any details you can provide will help us narrow things down. 

Currently, the option to do a batch delete is only available for bank feeds transactions that are yet added in QuickBooks. Let me guide you how to delete online banking transactions:

1. Click the Banking menu.
2. Select the correct account.
3. Go to the For Review tab then mark the items you're deleting.
4. Click the Batch actions button.
5. Choose Exclude Selected.
6. Once done, go to the Excluded tab.
7. Mark the transactions again then click the Batch actions button.
8. Click Delete.

That information should get you on the right track.

However, if you're deleting chart of accounts transactions, you'll need to delete them one at a time. Being able to do this in QBO is a great idea, and I would like to put this forward to our developers so I'd encourage you to send them your product suggestion. Here's how to send your product request:

1. Click the Gear icon.
2. Choose Feedback.
3. Enter your request/product suggestion, then click Next.
4. Click Skip and send message.
5. Select Feedback as the Category.

Please update me if you need further assistance with QuickBooks. I'm here to help.