If the Rashleigh Arns is showing it, that’s where I’d head. They have their own car park and there’s on street parking and a (payable) car park nearby too.
If it heads to extra time or penalties you can get excellent food there to help calm your nerves.
The Rashleigh will show it, I was there for the Panama game.
Two years ago the Harbourside in Charlestown had very lively crowds for the tournament in which England was playing.(sorry, American here and not familiar enough with football to remember the name of the event. Eurocup?) we could see and hear the pub from our cottage where my husband was watching the game on our TV, it was fun to feel a part of the crowd while also being in comfort of our living room.