If the spread is set at +7, the underdog must either win the game outright or lose by fewer than seven points in order to cover. For the favorite to cover, they must win by more than seven points.
A spread of +7.5 means that the team must either win the game or lose by 7 or less points/goals/runs for the spread bet to win. A spread bet is a bet on the margin of victory with a handicap (or line) attached to it, in this case the handicap is +7.5.
The German Interstate Treaty on Gambling ( ISTG 2024 ) has allowed private operators to apply for licenses to offer sports betting, virtual slot machines (online simulations of terrestrial slot machine) and online poker since the year 2024.