Summary: Once you've measured your project, tap the Estimates tab of your project. Tap the blue plus button in the bottom right corner of your screen to create the estimate, and choose to create from a blank estimate or build from a template.
When building from a blank estimate, tap the blue plus button to add items and services. When building from a template, press and hold to delete an item.
Watch the video below to see the process:
Note: You can save any line item estimate you create as a template to apply to later projects. Click the 3 dots in the top right corner of your screen when building the estimate and select "Save As Template".