Could We Get the Bill, Please?

After a meal at an Australian restaurant, you can ask the staff for the bill by saying, ‘Could we get the bill, please?’ It means ‘Would you please bring us the bill?’ It is a polite request, not a question about your ability to obtain it.

Here, bill means the statement showing what you owe for the meal. It is usual in Australia and Britain; American restaurants commonly use check. Avoid translating the Chinese expression for settling up literally as ‘buy the bill’, and there is no need for the command ‘Give me the bill’. Attract the staff member’s attention, then say the sentence calmly. Asking for the bill and deciding who will pay are separate matters.

https://dictionary.cambridge.org/dictionary/english/check?topic=bills-and-invoices
https://www.abc.net.au/education/learn-english/learn-english-ordering-food-in-australia/7382304