I'm wondering what submitting a url to a search engine is good for.
sorry I'm very novice when it comes to seo
You're submitting your URL to the search engine to have your site indexed. Otherwise there is no need to do it at all. I think you want it to be visited very often and if the bot doesn't index it your PR will be 0 and it means your site isn't popular and your site traffic is little and it's not good for your business.