You cannot enter your dependant's net income directly on the Schedule 5 using TurboTax Online. You'll need to go to Deductions and enter it under Additional Dependant Information.

I have followed all the instructions, but I still can't get the dependant's net income to show up on Schedule 5 and therefore the caregiver amount is not showing up on my return

Are you claiming an eligible dependant?

The Canada Revenue Agency's (CRA) Schedule 5 is used when taxpayers want to claim an amount for an eligible dependent, the amount for an infirm dependent age 18 or older, a caregiver amount, or an amount for a spouse or common-law partner.Jan 3, 2019

Please view CRA's page- > https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/about-your-tax-return/tax-re...