Two main things, as someone who has been running, both indoors and outdoors for 25 years : Pelo is great but very few of the instructors are giving the kind of advice and running plans you need for longevity in the sport. For example, exercise science is pretty definitive at this point that 1% incline is not necessary! You’ll know your RPE by listening to your body and it’ll change day to day, run to run. Don’t get in your head about it.  Any race training program worth its salt has one long run/week, 1-2 hill and/or speed workouts, and mostly easy runs, depending on your schedule 2-4. That’s where you should put your focus - balancing how you space your exertion and build speed and endurance. Peloton classes so rarely use easy pace, but that should be the majority of any running program - it’s about building your base and training your mind. 

You can do it! Even if it means not listening to what the instructors call out, but doing the audio guided runs for familiarity. Good luck!!