The SEO guy is talking a load of tosh. In any case, a survey is just a form. There are loads of form plugins. But if you want to collate and analyse the entries you may need something bespoke. There are survey plugins but I don’t use them. I build my own.

Personally, I would use my time to develop a GMB account for a wordpress plugin business. I don't think it's worth your time. You should consider where your audience would best see your reviews and plugin information. I think GMB is not the place. 

Hi. I cannot answer your question, but I was wondering if you could answer mine .. I have survey which I have created on another web site. I have been told I should have this on my actual web site (WordPress) what plug in would you suggest? This is the link to the survey: https://4eyes.io/s/cceOu/ This is my web site: www.kurtos-kalacs.com Thanks for your time ...