I have a Samsung Smart TV Samsung 4K TV and DVD Soundbar cable box how do I hook them all up together

[pdengerd73]

I need to be able to hook my 4K Samsung TV to an LG sound bar with cable box and 4K DVD player

 

[americanaudiophile]

Without mode number we can't know what connections you have available.
In general the cable box and DVD connect to the TV with HDMI cables.
The soundbar would connect to the TV with an HDMI-ARC or optical audio output connection in most cases.
The manuals should tell you how to hook them up.