The two URLs, Read and Read-Write, allow you to share your Azure Cosmos DB account with other people for a specified duration of time. Since the account access has an expiration time window of 24 hours, you can regain access by using a newly-generated access URL or the connection string.
Read URL- Other users can browse the databases, collections, queries, and other resources linked with that specific account, provided you share the read-only URL with them.
Read-Write URL- Other users can read and alter the databases, collections, queries, and other resources linked with that specific account if you share the Read-Write URL with them.