It would help if you were to name the resort you are going to.
Malaga airport has a taxi rank that operates 24 hours a day. You will be able to take a metered taxi. The cost would be high. Ronda which is just over 110 km away would cost approximately 150 euros as detailed on the Malaga airport website mentioned in another answer
It might be cheaper to prebook a shared shuttle bus service. There are many different ones, and ones that I am aware offer services from Malaga airport include www.holidaystaxis.com and www.hoppa.com. There are many others and I offer no opinion on the reliability of any,those are the two I have used from that airport.
Malaga airport is on the main costal train line, and it might be possible to save money by taking a train from that station, to a closer town, and then onward taxi. Again the destination you are visiting would help so we can offer ideas.
A tip in a taxi is normal, but not compulsory, approx 10%. But your journey is quite long so 10 euros would be acceptable. For short journeys, I would round up to the nearest whole euro.
Malaga is a holiday and cosmopolitan town, and sees holidaymakers from around the world, so you should have no issues based on your background, however all Licenced Spanish taxis have a complaints book. And if you have problems you can request to write a complaint in the book, which is reviewed by the licencing authorities