Solved by vortana_say in post #5 
              
              
                @ptrblck thanks. 
I added: 
Add softmax layer
mobilev2_loaded_model = nn.Sequential( 
mobilev2_loaded_model, 
nn.Softmax(1) 
) 
and serialized model again and now I can multiple 100 to the score and get the percentage of that class.