What tool to remove hexagonal license plate screws/ where could I go to have someone do it for me?

I bought a car online from carvana and it was awesome not having to deal with a dealership or anything, car was just delivered to my door!

however I really need to change the plates from the carvana ones and I have them but when I took my screw driver to remove the screws I realized it was bolted on with these weird hexagonal looking bolts.

what kind of tool do I use to remove and replace them and is it difficult? I’m not really a diy or car/ tool person tbh but it needs to be done!

Alternatively what kind of a place specifically could I take it to that I could pay to do it for me do you think?

thanks for any help!