oh my just had this convo with support...there is no real way to turn this off...only way I found is to your Skills Channel (whether published or not it makes no difference) and under the Visibility rules, change that to a group or branch that has no real users or is empty. Is the channel visibility is set to “all” or a branch or group that has active users in them, each user will see this message when they log in.

Note that the fact that skill collections or skills may not be published has no effect on this pop-up. We haven't yet launched skills so it was a mystery as to why this was appearing...not sure if Docebo is following up with a better solution but this should be addressed...

Hope this works for you...

I get this question a lot as well.  I know what I do is hit the little question mark on the top right and they go away for me for a bit but then they do come back.  It’s a constant thing honestly.