While work order is currently unavailable in QuickBooks, you might want to use the Estimate function instead. You can use it in times that you want to send a quote, bid, or a proposal for work. Here's how:
Click the Plus (+) icon and select Estimate.
Select the Customer.
Add any other details such as Date, Estimate Number, Product Service, and Rate.
Click Save or Save and Send.
Please see these articles for more details about how this feature works in QBO: