One of the most popular ranking myts: social signals will rank you in Google 👎. Remember my advice: your site must be popular (= must be ranked in google) to achieve these plusses and likes!
So, ranking will give you the popularity and social signals, not vice versa!
Social signals was some ranking factor in 2014-2015, with very limited effect and for short period of time, due on Google experiments and campaign in many sites 😃 Real example: http://3dwebdesign.org
business page have over 16000 real plus from gplus for 2 years.
So what? With and without plusses, ranking is the same. Now add only 20 links from 20 different domains and say me what's the result only month after. And how many time spent are only 1000 likes (real people, not fake paid likes) and to post these 20 links?