It depends on the specific sport and level of competition. For example, in basketball, games are typically played to a certain number of points (e.g. 21 points in 3x3 basketball, 100 points in NCAA Division I games). In tennis, matches are played to a certain number of sets (e.g. best of three sets in most professional matches). In soccer, matches are typically played for a specific amount of time (e.g. 90 minutes in a regular professional match).
