I was wondering if there is a way to get the Sketchup 2021 install version before the current version that is out know. I was also wondering if there is a version 2021 of (Sketchup checkup).
The official download page always updated to the last version, so you have to contact to customer support to get the earlier version of installer. (Or ask a forum if someone still have it… )
You can download (usually the most recent one) from here: https://help.sketchup.com/en/sketchup-checkup