A:AnswerYou would have to buy Microsoft Office 365 Personal or other 365 plans. It’s best to buy it at the same time as the Macbook to get a discount on the 365 and extra months.
A:AnswerYou do not need to purchase anything, you will be able to make spreedsheets using Google sheets, excel is different, any feature expected on HP can be expected for Apple Macbooks, disregarding all Microsoft Office 360 Apps.