Hello and welcome,
The easiest way of transport from Malaga airport to Torredelmar is by car or
Malaga airport transfers. Have you considered it?
There is no direct bus to Torredelmar from the airport, you may have to take a bus or a train from Malaga airport to Malaga Muelle Heredia, next to the port (the last stop) and from there take another bus to Torredelmar.