A modern NMR spectrum usually examines the region between #delta=-20*"ppm"# to #230*"ppm"#, i.e. #250*"ppm"# in the #""^13C{""^1H}# #NMR# spectrum. I think that you could reasonably report a #""^13C{""^1H}# #"NMR"# to #0.1*"ppm"# resolution. And so there are approx. #(250*"ppm")/(0.1*"ppm")=2500........#
And so by this reasoning there are #2500# individual #""^13C{""^1H}# #"chemical shifts"#.....Usually, different spectrometers give slightly different #"NMR chemical shifts........"# for the same compound.
Most of the time, when we examine a #""^13C{""^1H}# #"spectrum"# we are more interested in the number of signals we see, i.e. whether the proposed structure is consistent with the number of #""^13C# signals observed, rather than trying to assign each signal to a particular carbon. Of course, there are a raft of higher end experiments you can perform, hoesy, roesy, nosy, hohohaha, hetcorr, hmqc, hmbc etc....
