English - Any x Some

Any and some are both determiners. They are used to talk about indefinite quantities or numbers, when the exact quantity (or number) is not important.

As a general rule, we use some for positive statements, and any for questions and negative statements.

Examples:

I asked the woman if she could get me some diet soda.

I said: “Please, have you got any sparkling water?”

Unfortunately they didn't have any.

You will sometimes see some in questions and any in positive statements. When making an offer, or a request, in order to encourage the person we are speaking to to say “Yes”, you can use some in a question:

Would you mind getting some food while you’re at the shops?

 You can also use any in a positive statement if it comes after a word whose meaning is negative or limiting:

She gave me some bad advice.

Really? She rarely gives any bad advice.

Source: Google