My own fault, I read through a 2015 thread on how to find the auto saves and i din’t find anything. but just in case I’m missing something.
Usually back ups save as ~.skp in the folder i originally saved the file in… but seems i didn’t save it.
I did a quick drawing before christmas and got back on the drawing today in a rush of jobs first day back in the new year,
there is no sketchup folder under library/application support
even searched ~.skp in my mac