Hi
epgap is a setting to tell cplex when to stop.
In the link you have a measure of the gap.
Suppose you set epgap to 0.01 and a time limit to 10s
Then cplex stops after 10s and you want to know the gap.
Then you use what is in that link
regards
#DecisionOptimization#OPLusingCPLEXOptimizer