There is a great script for batch processing
creativepro.com/files/kahrel/indesign/batch_convert.html

But on the last few versions of indesign, an error is generated after processing 55 files. It does not matter what documents and in what format to convert. For example, I created an empty document, copied it 60 times, and ran the script. Also on file 56, indesign crashed with an error.

However, this is not an error of the script itself, the author could not reproduce it no matter how hard he tried. On previous versions of indesign (a year ago) everything worked without errors.

I also deleted the settings, reinstalled indesign - the error persists

MacOS 11.7.4
MacPro Late 2013
Indesign 18.2.1