Thanks for joining us at the Apple Support Communities. It looks like no one in the community has answered your question yet. It would be helpful if you could provide some more details so that the community will have more to work with.
1. Are you able to view your calendar on www.iCloud.com ?
2. Can you view your calendar on your iPhone?
3. What message do you get when trying to access your calendar on your Apple Watch?
A few details like these can really help the community help you out.
Have a great day!