Please can anyone tell me how to activate them. What should i do in order to activate those types of perks? It says inactive all the time.

@vishnu-teja-ch I moved this to Monster Legends.

You do not need to do anything to activate them, once you buy the Legends Golden Pass they are automatically started. You can see them percentage when you click on the farm or on a habitat. I think it is 30% but don't quote me on that.