说说 is the reduplicated form of the verb 说 (to say/speak). In Chinese, verb reduplication gives the action a casual, brief, or 'a little bit' nuance — it suggests doing something for a short time, often to make the request sound softer or more informal. You can use 说说 to mean 'to chat a little', 'to talk about something briefly', or 'to share thoughts casually'. The second syllable is typically pronounced in neutral tone (shuo).