A: Yes, put the disc in the Wii U — it boots into Wii Mode automatically.
If you just want to play a soccer game on Wii, buy a used copy of FIFA 14 or 15. If you want modern FIFA features, consider FIFA 23 on PC/console or eFootball (free) on modern platforms. Fifa 14 Wii Iso Download
A: Yes, but only if you dump it from your own disc. Dolphin runs FIFA 14 very well on mid-range PCs. A: Yes, put the disc in the Wii