No, there is no such thing as shared WHMCS licenses.
Some people may claim to sell or offer shared WHMCS licenses, which are illegal licenses that are used by multiple websites or servers at a low cost. However, these licenses are not authorized by WHMCS and can cause serious problems for the users, such as:
Security risks: Shared WHMCS licenses may contain malware, viruses, or backdoors that can compromise the security and privacy of the website and the data.
Legal issues: Shared WHMCS licenses violate the terms and conditions of WHMCS and can result in legal actions or penalties. WHMCS can detect and deactivate these licenses at any time, causing the website to stop working or display an invalid license message.
Don't go there ---