The most common and most likely answer to this crossword clue is the 5 letter word WHEEN
W
H
E
E
N
Buddy explains!
The straight part
We know that "not so many in Scotland" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case not so many in scotland = wheen.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does WHEEN mean?
WHEEN noun- A little; a small number.
- A quantity; a goodly number.