Some and any mean alguno/a, algunos/as and we generally use them when we don’t need to specify the quantity.
We use some…
1. In affirmative sentences, with countable plural nouns and uncountable nouns
👉 I still have some fruit in the fridge → Aún tengo algo de comida en el frigorífico
👉 Some of my friends are married → Algunos de mis amigos están casados
2. In questions, to offer something to someone without specifying the amount
👉 Would you like some coffee? → ¿Te apetece algo de café?
👉 Would you like some tea? → ¿Te apetece algo de té?
3. In questions, to ask permission politely
👉 Can I have some beer? → ¿Puedo tomar cerveza?
👉 Is it ok if I cook some vegetables? → ¿Te parece bien que cocine algo de verdura?
We use any…
1. In negative sentences, with countable plural nouns and uncountable nouns to express that we don’t have more of the thing we are talking about
👉 I don’t have any questions → No tengo ninguna pregunta
👉 You don’t have any coffee → No tienes nada de café
2. In questions, with a negative meaning, to ask if there is something left of the thing we are referring to
👉 Are there any children in the park? → ¿Hay algún niño en el parque?
👉 Is there any water in the kitchen? → ¿Hay algo de agua en la cocina?