backlinktool

With in a week how many backlinks we can create in scrapebox? and How much it's Index able? I saw my one of competitor they have been creating 88k backlinks with a week and it's indexed also ? i don't how ? if any one know plz tell me how ? or any other backlink creating tool?

Can anyone please tell me which is the Best tool to build quality Backlinks for google ranking? Thanks in advance