From doc to srt

An SRT file is a plain text (.txt) file with the .srt file extension.

If the .doc file is formatted correctly (sample below) and open in Microsoft Word, save the .doc as plain text.  Then in the Finder or Explorer change the file extension from ".txt" to ".srt".  It does not have to be Word.  Any application that supports saving a .doc file as plain text will work.

Sample formatting for SRT time index:

1
00:00:01,800 --> 00:00:07,600
here

2
00:00:33,800 --> 00:00:40,800
you are

You can test the resulting SRT by importing it to Premiere Pro (File > Import) and adding it to a Timeline (ideally one that has the video that it corresponds to).

https://en.editingtools.io/subtitles/