We didn’t receive a 1099G for the 2023 kicker refund. Do we need to add to 2024 tax return?

The kicker refund is treated like a state income tax refund. It'll be taxable if you itemized your deductions on your past federal return. To enter it in your return, follow the instructions from the TurboTax help article below:

Where do I enter a 1099-G for a state or local tax refund?

Oregon Surplus Refund (“Kicker”)