It won't contribute to resistance. There is a possibility it could become resistant to the chemical itself at best, but it's not like it would become resistant to antibiotics or anything from that. If anything the resistance would make it weaker, since adaptions that make organisms resistant usually make them reproduce slower and less fit.

Only a small percent of bacteria would be exposed to the soap so it wouldn't have a huge selection pressure. Chemicals used to kill bacteria outside the body are generally much harsher and harder to build resistance to than antibiotics which have to avoid killing human cells. So I don't think resistance is very likely.

I don't know if there is an advantage of antibacterial soap, but humanity hasn't "survived just fine" with regular hand soap. Washing hands to prevent infection wasn't even common until the past century or so.