Being a 2017 model, it's going to be expensive. If you're savvy enough with a screwdriver and have the patience, you can get replacement screens on ebay for probably anywhere around the $300 to $500 range and swap it out yourself. If you bring it to a tech, they will probably charge around $150 to replace it in labor cost.
A new screen from Apple will cost around $900 to probably $1500 depending ... my advice is, if it works, live with it. I've dropped my late model 2013 twice and actually cracked the screen ... twice ... replaced it ... twice ... no bueno!
:-)