your missing serial number if you know your purchase email. Troubleshoot the "too many computers" error. Compare which plan you actually have based on your receipt. Authorizing or Removing a License - SketchUp Help
You are trying to use a SketchUp 2021 perpetual code in SketchUp 2022, or a subscription login as a key. Fix: Verify you have a specific 2022 perpetual code. Upgrade your older license via Trimble’s Legacy Upgrade Program (if available) or purchase a new one. Sketchup 2022 License And Authorization Code