My Dodge 2019 Laramie will not start

2019 Dodge Laramie truck/My Dodge 2019 Laramie will not start after a
window tint technician finished working on the windows.  He had the doorsd
open on the truck for about hour and a half, at the end the truck horn began to
sound off and it would not stop for a couple of minutes.  Once he left I tried to
start the truck and nothing happened, the dash read press the brake pedal to
start.  I did and nothing happened, I figured it was my battery because i have
had it since I bought the truck 2 years ago.  Once I replaced the battery the
horn sounded off so I removed the fuse, and still my truck would not start.  
How can fix that.