Yes, it means not legally binding.
So, in SPFL rules
SPFL rules C15 The Clubs in positions 1 to 6 of the Premiership immediately after the 33rd League Match in any Season shall occupy the first six places in the League at the end of that Season and the Clubs in positions 7 to 12 of the Premiership immediately after the 33rd League Match in the same Season shall occupy the bottom six places in the League at the end of that Season. In the first 33 League Matches for each Club in each Season each of the Clubs in the Premiership shall play against each of the other 11 Clubs in the Premiership on 3 occasions and on at least one of such 3 occasions each Club shall be the Home Club. In the event that any other provision of these Rules is inconsistent with this Rule C15, or if any ambiguities are created thereby, this Rule shall take precedence.
C16 The Clubs in positions 1 to 6 of the Premiership immediately after the 33rd League Match in any Season shall play in that Season in a further five League Matches in that Season, once against each of the other five Clubs in such positions 1 to 6, and in at least two of such five League Matches each Club shall be the Home Club and the Clubs in positions 7 to 12 of the Premiership immediately after the 33rd League Match in any Season shall play in that Season in a further five League Matches in that Season, once against each of the other five Clubs in such positions 7 to 12, and in at least two of such five League Matches each Club shall be the Home Club.
This is how FINAL LEAGUE POSTIONS are drawn to a conclusion.
Any departure from that would be null and void.
FINAL LEAGUE POSTIONS.
No where does it say "and after 38 games all final league positions, goal records and points are confirmed"
If it did, then yes the goal records would also be null and void.
But it doesn't.
The only "null and void" part would be the handing out of league positions unless the season is drawn to a conclusion.
FINAL LEAGUE POSTIONS