Knowing your fretboard is a great way to start your journey into music theory and scale knowledge. Once you know a bit more of the fretboard and can connect the dots, so to speak, it'll open up a lot with scale patterns and chord voicings.
Another thing that's really good to do as a bit of an exercise is to pick a random note, let's say F#. Then you try to find every F# and it's octave on the fretboard.
Then just do that with all 12 notes. Once you get a bit deeper in this you'll have a better starting point for soloing w scales or arpeggios. Because once you know where the root of the scale is, you'll start to be able to see the rest of the patterns as well.
Hope this helps.
Let me know if you have any other questions.
Regards,
Henrik
