If you've created a collection outside of Rarible (via your own smart contract or another NFT platform), you can claim it on Rarible. Claiming your collection will give you ownership of and edit rights to the collection.
Here's how it works:
1. Navigate to your collection.
2. On the collection page, click on the three dots below the collection's description and then click on "Claim ownership."
3. Rarible will identify whether your wallet address created the collection or not (if this step fails, make sure you're logged in with the correct wallet).
If you are still unable to claim the collection that you rightfully own, please contact our support team via: https://rariblecom.zendesk.com/hc/en-us/requests/new