I wouldn't mind geting more materials on backlins

I am currently unable to verify my domain ownership via DNS record on my google search console profile. we were directed to go to hostgator account when clearly I did not register for hostgator. In fact this is the first time i am hearing about host gator through out this course. What was registered for was dreamhost and i dont know how to proceed from here. I need assistance on what to do next ASAP as this is really confussing. I have attached my screenshot of where i got stuck

how do i Change this "just another word press website" being displayed on my website. I added the screenshot for assistance,

I am unable to pay for my domain because the secure order link is locked and i have added card successfully. please anyone experiencing this challenge?