Count value based on measure

Hi, Guenfood77 

Based on your description, I have created many measures to achieve the effect you are looking for. Following picture shows the effect of the display.

Measure:

Count of Product =

VAR _A =

    CALCULATE ( COUNTROWS ( 'Table' ), 'Table'[Product] = "A", ALL ( 'Table' ) )

VAR _nonA =

    CALCULATE ( COUNTROWS ( 'Table' ), ALLEXCEPT ( 'Table', 'Table'[Id] ) )

RETURN

    IF ( SELECTEDVALUE ( 'Table'[Product] ) = "A", _A, _nonA )

If this does not work, could you please share some sample data without sensitive information and expected output(You can present the desired effect in a table, as well as a detailed description of the logic to achieve this effect).
How to provide sample data in the Power BI Forum - Microsoft Fabric Community

Best Regards,
Yang
Community Support Team

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If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

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