If you are using TurboTax Online, you can see the line numbers of the T1/Schedule 1 on the Detailed Summary. Net Income is line 23600, which is at the bottom of the 2nd section on the page. This FAQ shows how to get there: https://turbotax.community.intuit.ca/community/tax-return-status/help/how-can-i-see-a-detailed-summa...
If you are using TurboTax CD/Download, you can click on the Forms icon in the blue icon bar at the top to switch to Forms mode. There you’ll be able to access the actual tax forms, so you can see the line numbers.
Net Income is line 23600, which is at the bottom of Step 3 – Net Income on page 3. You can get there quickly by clicking on the Federal icon in the blue icon bar at the top. Then select “Go to T1 page 3” and click the OK button.
