Hi Gerantina,
You can use the ListIndexOf action from System to get the position of the element in the list using your Product Id as a filter in the Condition parameter.
Afterwards, you'll get the Position of that element in the list (you'll get -1 if no element is found) and you can use that position to fetch the record from the list using the syntax List[<Position>] like on the example below:

And then use this record to display information on the screen.
Hope it helps.
Kind Regards,
João