Something has come up. Google domains has been sold to squarespace. People can transfer them free of charge to WordPress?

But how do I know if I have a Google domain? I tried looking it up but didn’t go far, I need to write down the sequence of what to do or I might get lost? Plus how come Google is allowed to sell something you have already paid for? Is it like buying a car and then being told the maker has gone bankrupt so your car now belongs to someone else? I never understand this guff….