First, your maximum range is 50, but it is not included in your first while loop (ends at 49), change the last line to <= 50. You can remove the while loop, and change the if statements to if/elifs. Second, your indentation is off in the while userScore != 3: loop, but that could just be a copy/paste error.
And now for the most likely cause of the error,
userGuess = input("Make a guessing attempt for the correct number: ")
is a string, don't forget to make it an int before you compare it to another int.
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