How much jail time do you get for not doing 76 hours of community service, the judge told me to do them and I failed... what is the time limit I would have to do

Please keep all your questions under one post by using Answer.
Your 2 questions aren't answerable because they are lacking all sorts of information, what state, what crime, what history, and so on. Even then answers will be just approximate, and we don't know how you act in court, or why you skipped, etc, and it depends on the judge too.

A little or a lot... it depends on a lot of things you didn't take the time to tell us.

Probation for what, there is not enough info in your question to even guess what you are talking about.

how much jail time do you get for not doing 76 hours of community service, the judge told me to do them and i failed.... what is the time limit i would have to do

There is no excusable reason for not doing court ordered community service. The judge may order you to serve your original jail time in jail this time around for not obeying his order. Go back and re-read your original sentencing paperwork for your answer.