Sometime means at some point in the future, but not necessarily soon. You can use it when talking about plans or intentions that aren't set for a specific date.
When you want to talk about something that will happen eventually, but don't know exactly when, "sometime" is a great word to use. For example, if someone asks you what you're going to do next weekend and you say "I'm thinking of going to the beach sometime," it means you haven't decided yet, but you're leaning towards it.
At an indefinite but stated time in the past or future.
Example: I'll see you at the pub sometime this evening.
