smile
You should remove the braces from this line.
{ msg $chan $3 now has $readini(Points.ini,$+(#,.,$3),Points) total points. }
Code:
on $*:text:/!points (add|remove)/Si:#:{
  if ($nick isop #) {
    if ($0 < 3) { msg # Insufficient parameters: Use !points <add|remove> <user> [number] | return }
    writeini -n Points.ini $+(#,.,$3) Points $calc($readini(Points.ini,$+(#,.,$3),Points) $iif($2 == add,+,-) $iif($4 isnum,$4,1))
    msg $chan $3 now has $readini(Points.ini,$+(#,.,$3),Points) total points.
  }
  else { msg $chan This command is only available to moderators. }
}