A simple backlinks could be enough to make you rankare the keyword in question, if we talk about the amount of backlinks that can be considered a basic goal, for my experience 2k reference domains with about 1/2 million backlinks could complete your goal. the quality is what counts is useless to have many backlinks if the quality is low, and preferable to have a few but high quality, it is precisely this score that will guarantee you the rank on google.