I read those rules, not an easy read.
It seems to me the National League have set a percentage, they describe as “a levy”, which they will take from the net proceeds of the game after all expenses for both clubs (and including the travel and hotel costs for National League board members and officers who attend the match). The remaining proceeds are split 50% each to the 2 clubs.
I can’t find out what amount the levy is but it was agreed prior to the start of the season.
Should be a good earner for the league if it is (as we hope !) at Scunthorpe.
Worth remembering that there’s a similar setup for the Football League play-offs and FA Cup ties have a similar arrangement.