Under what rule would you use for enforcement from the subsequent kickoff? A has not scored a touchdown on this play, so any possible bridge to a spot outside of the previous spot just isn't there.
I should have said succeeding spot
Rule 8-4 2025 NFHS Football Rules Page 70
ART. 3•.. During a try, A may score two points from what would be a
touchdown or one point for a field goal or safety by B under rules governing play
at other times during the game. Only A may score during a try.
ART. 5... If during a successful try, a foul by B occurs, A is given the choice of:
a. Accepting the penalty and replaying the down following enforcement; or
b. Accepting the result of the play and enforcement of the penalty from the
succeeding spot.