The Quicken Windows Help page How do I create a budget? says "Budgets default to the current year. Use Advanced Budget Settings to adjust this if needed."
It isn't obvious (to me anyway) how Advanced Budget Settings are used to adjust the year used. There doesn't seem to be anywhere to enter a year and both choices under "Budget Year" seem to create a budget for 2025.
It appears Advanced Budget Settings can use a different starting month for the year, but still uses the current year's data.