Hi @Males
and welcome to the Premiere Pro Forum community. Thank you for taking your time to report a problem. Have you tried the Export Captions Keyboard shortcut? This should give you an srt file. Or you could also navigate to the Text panel, select the "Captions" tab, and then click the ellipsis (three dots) to access the export options. Choose ".srt" as the file format and save the file.
Here to Help
Ian