So, the key to getting in great shape: training like a pro soccer player. Combine 1-3 days per week of interval training, with 2-3 days per week of high volume lower body lifting (with upper body lifting another 2-3 days as well to keep the body even), and finish with some core training.
How long does it take to get into shape for soccer?
You should expect it to take anywhere from one month to six months to get fit for soccer. This will vary depending on your circumstance regarding the intensity of the league you are going to play in and your current level of fitness.