Do these two have the same meaning?

What good is that going to do you?
What use do you have for it?

Question

Do these two have the same meaning?

What good is that going to do you?
What use do you have for it?

Answer

Hmmm, not really. "Use" is generally more practical than "good".

Perhaps in specific situations they might be used interchangeably.

For example: if person A says "I want to learn to speak Turkish." , then person B could say"What good is that going to do you?"
Or "What use do you have for it?" AND this might provoke the same answer from person A, for example  "I'm going there on holiday."

HOWEVER 
Imagine person A just likes learning languages they might respond to the first question by saying "I enjoy learning languages." But they would probably to  respond to the second question by saying "None (ie 'no use'), I just enjoy learning languages."

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