where do I get rosetta download link

And only apples to Apple Computer running on an M1 / M2 Apple Silicon Computer

If you need to install Rosetta on your Mac

If you have a Mac with Apple silicon, you are asked to install Rosetta the first time you open an app built for an Intel-based Mac. Click Install, then enter your user name and password to allow installation to proceed. 

After installing Rosetta, it is available to any other apps that need it, so you will not be asked to install it again. If you choose not to install Rosetta now, you will be asked again the next time you open an app that requires Rosetta.

There is no Rosetta 2 link. It automatically downloads when needed.