I did, or I thought I did, but I have learned that if you go through the motions, what you did, it is not always what you thought you did and this is another one of those cases. I thought I copied your code

In[558]:= Count[#, u /; u < 0] & /@ (cc // QuantityMagnitude)

Out[558]= {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0}

so I checked again, and what I thought I did, I did not do, So yes, copying your code correctly gives me a correct result. Thank you very much, I am sorry for the mistake.

In[559]:= Count[cc // QuantityMagnitude, u_ /; u < 0]

Out[559]= 34

Thanks for helping Bill

I tried the () on all the combinations I tried before and the one you suggested but Count[] or Length[] does not give a count. The inner code I get all zeros, or all ones, or all twos or just plain 0.

Count[cc, Positive]
Count[cc, "-"]
Count[#, Positive] & /@ (cc // QuantityMagnitude)
Count[#, "-" ] & /@ (cc // QuantityMagnitude)
Count[#, u_ /; u_ == Positive] & /@ (cc // QuantityMagnitude)
Count[#, Positive[#]] & /@ cc
Count[Positive[#]] & /@ cc   (* as least the function Positive[] \
works*)
Count[Positive[#], True] & /@ cc   
Length@Select[Positive[#]] & /@ (cc // QuantityMagnitude)

Other combinations I have tried without success

Count[cc, Positive]
Count[cc, "-"]
Count[#, Positive] & /@ cc // QuantityMagnitude
Count[#, "-" ] & /@ cc // QuantityMagnitude
Count[#, u_ /; u_ == Positive] & /@ cc // QuantityMagnitude
Count[#, Positive[#]] & /@ cc
Count[Positive[#]] & /@ cc   (* as least the function Positive[] \
works*)
Count[Positive[#], True] & /@ cc   
Length@Select[Positive[#]] & /@ cc // QuantityMagnitude

I used QuantityMagnitude[] to strip off the units ($) cc looks like this

In[416]:= cc // QuantityMagnitude

Out[416]= {-20.915, -0.814995, -1.66, -4.02, 7.3, -2.45, -2.51, -1.7, \
5.49, -1.72, -1.22, 1.69, -0.959999, 1.97, -0.980003, -2.71, -1.21, \
-2.6, 2.35, 0.25, 9.89999, -10.52, -6.25, -0.0400009, 0.700005, 1.49, \
2.35, 1.52, -2.24, -0.340004, 5.25, -6.07, 6.04, 2.08, -3.11, 12.65, \
-4.73001, -0.699989, 5.18999, -1.03999, 5.06, -1.51001, 35.52, 6.92, \
25.17, -2.39999, -0.710007, 12.09, -18.4, 1.77, 7.32001, 16.49, \
-5.31, 2.61, 6.42999, -7.53999, 13.48, -2.31, 12.99, 7.48999, 15.41, \
11.63, 15.27, -19.14, 7.54001, -8.95999, 10.05, 14.17, 10.06, \
-9.85001}

cc is just a list of positive and negative numbers