BF40
This is a 40% off code. Very often they do 30%.
Just one of their products as an example. Note that while this model does have a dashcam, it's only a FullHD one, which is ok, but there are much better standalone dashcams. Their other products don't have the dashcam (but can have a rear cam).
These are a screen that can do Apple Carplay or Android Auto and play the audio through your car radio. In sizes from 5-10". Various options like rear cameras, dashcam. Various mounting options.
I have a 7" in my car and a 10" (with wireless rear camera) in my motorhome. They work quite well mainly being limited by the quality of the Carplay apps. In a car it can be a little tricky finding a place to mount it.