Here are some examples of how it might be used:
* "¿Puedes ayudarme en un rato?" (Can you help me in a while?)
* "Voy a terminar esto en un rato." (I'll finish this soon.)
* "Nos vemos en un rato." (See you soon.)
The exact meaning of "en un rato" can vary slightly depending on the context, but it generally implies a relatively short period of time, perhaps 15-30 minutes or less.