I have added that 1st field is nominal and when I ran my Random-Forest algorithm it gives me the below output without the correct and Incorrect fields.
Dataset Information = https://archive.ics.uci.edu/ml/datasets/Crop+mapping+using+fused+optical-radar+data+set
My question is how to get the Correctly and Incorrectly fields in my Weka output
By default, Weka uses the last attribute as class attribute. Make sure to select the correct attribute to act as class attribute from the dropdown list on the Classify tab.
RandomForest works with numeric and nominal class attributes, either performing regression (what you got in yout output) or classification.