Can't get the gear shift out of park

I'd check into the shift lock-out system. I don't have personal experience with this vehicle but it's a pretty standard safety feature in vehicles from the last 20 years or so. When you step on the brake, a signal is sent to the computer that activates a solenoid / pin mechanism that allows you to shift out of park.

One more thought, if they were working on the starter in the engine bay, there may be a chance that something (wire harness) was shifted out of the way and is now interfering with the shift linkage.

Thanks, I think I will go back to the Ford dealership and ask if that's what happened, because I've never had this issue before I got it fixed.

Just got a new battery so it won't be that.