What Excel skills are good for finance and accounting?

Almost all the excel Skills are useful for Office jobs and majority are useful in Accounts also.

Skills like Applying Formulas, Linking sheets and different files, conditional formating etc.

Excel is about Finance and Accounting (Numbers) as much you know is good. Specifically you should know Formulas, IF statement, vlookup, PivotTable, creating link,  VBA knoweldge will be a great help.