Please explain about QANTAS Flight Sydney to Johannesburg QF63/QF64. Is it true the plane route near of south pole?
No, these flights do not go close the South Pole, not even very close to Antarctica. Here is the flight path for QANTAS QFA63:
FlightAware QANTAS QFA63 Sydney to Johannesburg The yellow parts of the route are "tracked" and the white part is outside tracking range and is simply the "great circle route" joining the two points.
You will find that QF63 and QF64 take slightly different routes to take best advantage of the winds.