Here are some of the social features Peloton are building:

https://blog.onepeloton.com/peloton-community-features/

Leaderboard: Compete with friends/others.

Tags: Like groups/circles, you can be invited/invite on the basis or compete with people in that tag.

High Fives: A "Like"

Following Friends: Essentially their fitness "stream" showing what they've done/are doing.

Video Chatting: Chat with friends while you workout together.

Plus you'll get alerted when a friend is in a class, encouraging you to join them.

https://blog.onepeloton.com/peloton-sessions/

Schedule workouts with friends, compare each other on the leaderboard.

The biggest 'social' part is that my friends and I end up doing the same rides, and even though it's at different times we end up competing and chasing each other. I had some goals I thought were going to take months, but I've already blown threw them b/c I could chase my friends ghost on his ride. If I do a ride first, I text it out to everyone basically throwing the down gauntlet.

There's also a talent component. I've done everything from spin, to weight classes, to powerlifting for many years when I was younger, and the Peloton trainers are very good. They are good motivators, and they have taught me quite a few warmup techniques I'm carrying to other areas as life gets back to normal. YMMV.

I haven't used it, but my 10 year old daughter seems to enjoy riding at the same time as her friend. Evidently, they share a real time a mutual video chat. You both join the same class and one of you finds the other in the list of participants and request to chat.