Net rental income reports to line 12600. If you are using TurboTax Online, you can click on "View detailed summary" found at the top of the page to check the amount reporting here. If the line is showing zero, and you have confirmed all income and expenses, including fixed asset purchases to claim capital cost allowance, have been entered, it is possible you have a nil net income.
Capital cost allowance (CCA) cannot be used to create or increase a loss against rental income. TurboTax software is designed to limit the amount of CCA claimed to the net income, of one or multiple rental properties.
Rental property CCA
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