Technical details for my website

I have created my website on Squarespace. Prior to that, I believe I purchased a domain name through Realtor.com. I have done a few things not sure they are all needed. 1) I need to connect my domain and Squarespace together. 2) On main webpage to insert a section that has/shows my customer reviews. Then create where customers can give those reviews so everyone can see. Right now I have a Facebook and Instagram page. 3) right now when you google search me, an inactive website comes up from realtor.com. I started that site but stopped and went to squarespace. I phoned realtor.com and had them shut down the site once I realized it was public. I don't want it to even pop up from realtor.com, unless that is where my final website will sit. 4) Make my site so it can be read on any phone or screen. Open to your expertise and suggestions.