In short
US DMVs don't publish road-test routes officially. Three ways to find them: (1) ask your instructor, (2) use Driving Routes (100+ DMV centers), or (3) hunt through Reddit and YouTube. Option 2 is fastest.
FAQ
Are US DMV road test routes public?
State DMVs don't publish them officially, but they're widely known by local instructors and learners.
Is it cheating to practise the routes?
No. Local familiarisation is standard practice and what instructors recommend.
How many routes does each DMV use?
Typically 3 to 8 per DMV center. The examiner picks one on the day.