To give you a useful, long-form article, I’ll assume you meant something like (since “crforvs” is a common abbreviation for Crystal Reports for Visual Studio).
: The version of the developer engine used during creation should match the runtime version installed on the end-user's machine to avoid compatibility errors. Best Practices for Downloading SAP Crystal Reports for Visual Studio (.NET)
While many legacy links for the original 13.0.0.99 version may be broken, you can typically find the installer and its successors through official channels: