For ease of explanation, assume a player's handicap gives him/her one stroke per hole (i.e., 9-hole handicap of 9). This player, playing to his/her handicap on a given day, will average a bogey on each hole. Playing 'to' ones handicap is expected and so there is no reward or punishment due when a bogey 5 is recorded on a par 4. Thus, a 0 (zero) is recorded. A double-bogey 6 (one over what's expected from a player on a 9 handicap, would incur a penalty of a minus ''. A 4 (a genuine, unadjusted par) is one better than a '9-handicapper' would be expected to score and would earn a plus '+'. However, for this golfer, 6s and above still incur just one minus ''. Likewise, 4s and below earn just one plus '+'. At the end of the round, plusses and minuses are reconciled (a minus cancels out a plus). If a player finishes with two plusses, s/he is 'two up' or 'plus 2' (+2). The opposite applies if s/he finishes with two minuses - 'two down'; 'minus 2'; '2'.

Can we conclude that can you get a negative score in golf?
yes