American odds display your return relative to a baseline of $100 USDC. 

If there is a minus (-) symbol, you need to bet that amount to win $100 USDC. 

Example: If you bet $120 USDC on odds of -120, it would return $220 USDC if you win ($120 bet + $100 in profit).

If there is a plus (+) symbol, you win that amount for every $100 USDC you bet.

Example: If you bet $100 USDC on odds of +120, it would return $220 USDC if you win ($100 bet + $120 in profit).