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A 2018 state refund you received in 2022?  I don't think you need to enter the year at all.  Doesn't matter what year it's for.  But you might not need to enter it at all.  

A State Tax Refund is taxable if you itemized deductions on that prior year's federal return and took a deduction for state income taxes instead of the sale tax.  You got a deduction benefit for it so now you have to include it as income. If you took the standard deduction it is not taxable and you don't need to report it.