How do i cancel a quote

Do you mean to delete a quote in QuickBooks Online, karin? 

If so, then yes, you can do it. Simply open the quote and click the Delete button. I'll show you how:

1. Open the Bookkeeping menu.
2. Select Transactions, then click on All Sales.
3. Locate and access the quote.
4. Hit More.
5. Click on Delete, then hit Yes to confirm your changes.

If you mean another thing, I'd appreciate your reply to this thread and providing more details. This helps us determine the best resolution.

Moreover, read this through to get some ideas on how to personalize and manage quotes and other sales forms in QBO: Customise invoices, quotes, and sales receipts in QuickBooks Online.

I'd be glad to assist you further regarding sales forms or QuickBooks. Just leave a comment below to notify me. Stay healthy and take care!