Question about getting a Category B driving licence

Hi everyone, I’m planning to get my Class B driver's license soon and would like to know how long the process usually takes and roughly what kind of costs I should expect. I’ve read that the training generally takes about 3 to 6 months. At the same time, I’ve come across intensive courses that claim you can get your license within just 14 days.

How realistic is it really to get your license in such a short time? Has anyone here had experience with an intensive course like that? Do you think an intensive course is worth it?