For those having this problem…
It’s really rare…
In most cases you will be missing something like Stable Tag: in your readme.txt file (it should be latest production-ready version).
You will also need to make sure, version is correct on your main plugin .php file header.
Also… version should be tagged to tags/{your_version} with svn copy for example, to tag version 5.2.0 from master we would want to do…
svn copy trunk tags/5.2.0
This should match Stable tag:
If al this is done and you have like waited for at least 10 hours… And still version ain’t live (which is very rare), you can go ahead and do another commit with maybe just another line break to like ping WordPress again…
Do this only when everything above doesn’t work and you have waited like 10 hours and do it only once because this is an expensive operation for wp.org servers…
Hope that helps (somebody).