Depends on your SmartThings server, hub and network latency. Also do note that there is a rate limitation built in on request from ST’s engineers so that it doesn’t negatively impact the platform. Some people put it in a loop (accidentally or otherwise) and that should not be done.
You can however take a burst of pictures say 5 or 10 in a minute. The pictures are uploaded to your SmartThing server and be viewed through the ST Classic app in your device page by clicking on the Picture tile or in the Recently tab. I believe you can then save the pictures from the picture tile onto your mobile phone (depending on version of the ST Classic app you’re using).