It is a property of a VM called "Creation Date". Keep in mind you need vROps 7.5+ and collecting from vCenter 6.7+. And alternate solution for this use case is using Log Insight to gain this information.
Thanks for replying back on this. Im running 7.5 at the moment but not at vSphere 6.7 but when i am i will check this metric out further.
It is not exactly what you are looking for, but you can do similar think in this way:
Go to: Administration -> Inventory -> Recently Added Objects
you can find here recently added object in last 1, 7, 10, 30 days and filter it.