Summary
Stuck transcriptions are often caused by corrupt cache files. Close Premiere, then go to Edit > Preferences > Media Cache next to "Remove media cache files". Adobe Community 📝 Common Workflow Issues & Solutions
Causes of the Issues
Version Mismatch: The Speech to Text module version doesn't align with the Premiere Pro build.
The Issues with Adobe Speech to Text v2.16 adobe speech to text v216 for premiere pro 20 fix
The v216 update or specific internal builds sometimes lose the connection between the Premiere Pro interface and the local language packs.
Run Premiere Pro as Administrator to allow the software to write the transcription data to your drive. Review — "Adobe Speech to Text v216 for
Before attempting any fixes, ensure your software matches the requirement.