To solve problems like these, we must break it down for each term.
"14 less than Julie's score"
This implies that we are going to have 14 less than the variable that represents Julie's score (which in this case, is m).
m-14
"is 62"
"Is" is almost always used as a way of saying "=," and 62 is the value that it equals.
m-14=62
Using the reasoning above, we can see that an equation to represent this scenario is m-14=62.