Who is favored to win? According to Bookmaker 2, Napoli is the favorite with odds of 2.15. This implies a 47% chance of winning (possible). A £10 bet would return £21.50 if they win (£11.50 profit).
What about Lazio? The odds of 3.80 suggest a 26% chance of winning (unlikely). However, if you bet £10 and they win, you'd get £38.00 back (£28.00 profit) — higher risk, higher reward.
How likely is a draw? Draw odds of 3.00 imply a 33% probability. A £10 bet on a draw would return £30.00 if correct (£20.00 profit).
How to read odds: Lower odds = more likely to happen (but smaller payout). Higher odds = less likely (but bigger payout if correct). Multiply your stake by the odds to calculate your total return.