Sprinting is amazing for building up your speed, VO2 max (basically effiency with oxygen), and leg muscles. You may not be able to do it as long, so you might as well add it to some of your conditioning routines.
Sprinting is just running really fast. The more you do it, the better your conditioning will get, and the better your average run time/race pace will be. If you are by yourself, you can do interval training with Sprints, like Sprinting for 30-60 seconds, then walking/light jogging for twice the sprint time. If you have access to a track, or a ball field of some type, you can alternate your sprints and walking/jogging for the different lengths of the field. You can also sprint up hills to really challenge yourself. Just be careful, as you could easily over do it if you are just starting out on your fitness journey.
Work hard. Improve yourself. Be the Hero. You got this.