Absolutely Positively NO. She's definitely entertaining and you can learn a lot from her.
Law and Order and SVU are very closer to our real justice system. Criminals have more rights than their victims.
Is Judge Judy a good representation of the Judicial system?
No .. Not even remotely. She often cuts people off and doesnt even allow them to tell their side of  the story. She seems to form her decisions before she hears all the testimony .. For no other purpose but the theatrics.
Not at all ! It's just a scripted T.V. Show. Our Judicial system doesn't work like that.
No! If she acted like that in real court she would be kicked of the bench and possible be disbarred.
No, but it's not really intended to be:
"Judge Judy is a long-running American arbitration-based reality court show presided over by retired Manhattan family court Judge Judy Sheindlin. The show features Sheindlin adjudicating real-life small claim disputes within a simulated courtroom set. All parties involved must sign contracts agreeing to arbitration under Sheindlin.
Sheindlin has been credited with introducing the 'tough' adjudicating approach into the judicial genre."
no, she's  acting for entertainment purposes.