How long does it take to get 1500 hours of flight time?
How long does it take to do anything? Some people can run a marathon in 2hrs, for me it would take 2 months. It depends how you’re building that time and how often you’re flying. That said the most COMMON route is flight instructing and most people who are working full time take about 18mos AFTER they’re done with all their training.
If you work for ATP as an instructor, it should take about two years. At other places your mileage may vary.