The Circle of Fifths helps with the names of the scales. E.g. G major has 1 sharp: https://method-behind-the-music.com/theory/scalesandkeys/

Here are the top and bottom keys on the keyboard for the bass scale  (The top line of the bass scale is A below middle C. And the bottom line of the bass scale is G below the C below middle C) And treble scale top and bottom notes  The bottom note (i.e on the…