The term Estimate is created by default, @scottaajones.
In QuickBooks Online, you have the option to modify the form name to Quote. You can also change the template to that term if you prefer.
You can follow these steps:
- Click the Gear icon.
- Under Your Company, select Custom Form Styles.
- If you have a template for the estimates, click the Edit link below the Action column.
- If you don't, click the New Style button and select Estimates.
- Click the Content tab.
- Select the header of the template.
- In the Form section, change the Form name to Quote.
- Click Done.
- To set this template as the default, click the drop-down arrow below the Action column and select Make default.

You can also import your own template in QBO. You just need to turn on the Import Style feature from the Account and Settings. I'll show the steps:
- Select the Gear icon.
- Choose QuickBooks Labs under Your Company.
- Turn on Import Style.
Once done, you can upload them. Here's the steps:
- Go to the Gear icon at the upper right.
- Select Custom Form Styles.
- Click New style, then select Import style.
- Choose Estimate.
- Click on the Next button then Browse.
- Map the fields for the template until finished.
For additional information, you can check this article for the step-by-step instruction: Import custom form styles for invoices or estimates.
In case you want to add some details and logos to make your sales forms more personalized, please see this article: Customize invoices, estimates, and sales receipts in QuickBooks Online.
I’ll be here anytime you need help with QuickBooks. Have a great day.