=TODAY()
        =TODAY()
    This formula returns the current date based on the computer's system date. The value is automatically updated whenever the worksheet is recalculated to always reflect the current date.
=TODAY()+7
    This formula returns a date that is 7 days in the future from the current date. It calculates this by adding 7 to the current date returned by the TODAY function.
The TODAY function returns the current date based on the computer's system date, with no need for arguments or input parameters.