As per Little League rules, maximum pitches permitted are as follows:

Age 7&8 - 50 pitches per game
Age 9&10 - 75 pitches per game
Age 11&12 - 85 pitches per game
Age 13 - 95 pitches per game
 

As per Little League rules, days of rest are as follows:

1-20 pitches in a day, zero (0) days of rest required
21-35 pitches in a day, one (1) day of rest required
36-50 pitches in a day, two (2) days of rest required
51-65 pitches in a day, three (3) days of rest required
66 or more pitches in a day, four (4) days of rest required