What audio outputs does your TV have?
Which Vizio soundbar?
Should be very simple for digital - optical out from TV to optical in on soundbar.
Same for analog - RCA out on TV to RCA in on soundbar.
Make sure if using analog (RCA) that you have connected to an output on the TV, not an input. The only reason I say this is this same problem was encountered by another user a few weeks ago. Input to input will never work.