kidDynamite77- Like I go gym 6 days a week and can I do all this round 3 days a week or more.

No dude, 3-5 rounds means that they are performed in rounds after eachother.

and how many days in a week I can do this cardio ?? 4 days enough ??

u can do it everyday, but u must do at max of 5~7 rounds per day