The Ontario Staycation Tax Credit only applies to leisure stays between January 1, 2022, and December 31, 2022, so you can’t claim it until your 2022 tax return. You can find more information on the Ontario Ministry of Finance website: Ontario Staycation Tax Credit
Please be advised that the Ontario Staycation credit is now available in TurboTax Online. To apply for the credit, you can select Provincial, then Provincial Tax Credit Profile.