The minimum time is 42 days — three consecutive 14-day phases (Phase 1, 2, and 3). This assumes you pass all three phases on your first attempt without any restarts.
After passing Phase 3 and advancing to the FTMO live challenge, your trading credentials are delivered within 24 to 48 hours.
In practice, the timeline depends on your trading performance and whether you need to restart any phase. There is no maximum time limit on how long you can remain in the programme provided you are progressing and following the rules.