Basically, all chords are made up of notes in ‘a scale’ or another word being a key , and the notes in a scale are used to develop chords when composing songs or as a skeleton of 7 notes phrased anywhere on the fretboard when soloing over specific chord progressions

For example, a song in the key E-minor would appropriately be soloe’d over with an E-natural minor scale [1st , 2nd ,b3rd , 4th , 5th ,b6th , 7th ] . I hope that’s a help; by the way if you can tell me some songs you’re most familiar with or favourite music? I will let you know the key they are in , the chords and what scale corresponds. the major and the minor scale are a good place to start and really really get comfortable with before getting into things like pentatonic and more complex things

If I said that the minor natural key is the 6th note in any major scale for instance; would you be happy with that? [just trying to gauge a sense of where you're at with theory]

the major and the minor scale are a good place to start and really really get comfortable with before getting into things like pentatonic and more complex things