(AET) refers to the fact that the final was won in extra time. (r) refers to the fact that the final was a draw in the first game and was won in the second game by means of a replay. (g.g) refers to the fact that the game was won by means of golden goal where the first to score in extra time would win the game. (p) refers to the fact that the game was won on penalties.
Euro 2020 had multiple host nations to celebrate the competition's 60th Anniversary. Just name the nation which hosted the final.
However, for tournaments where there were 2 host nations, name both. The nation which hosted the final is underlined. The countries are placed in alphabetical order when there are 2 host nations.