1099-Misc Alaska Permanent Fund Dividend box 3 has 3284 but the taxable income is 2622 what do I put in the box 3?

You enter the amount that is in box 3

See this TurboTax support FAQ for reporting the Alaska Permanent Fund Dividend - https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/enter-2021-alaska-permanent-fund-dividend-alaska/L5dAGF25t_US_en_US?uid=lfpy87dd