How to install in new computer

I am replacing my old 2012 iMac (w/macOS Catalina v10.15.8) with a new one and need guidance on how to re-install 1Password 7 in my new computer and ensure I delete all 1Password from the old so I can recycle the device. I also have a laptop usinf 1Password that is in-sync with the old iMac. Thanks in advance.