For Emeritus (Lifetime) status? I don't think that Marriott publishes that on their website anywhere. If you call and ask, they will tell you the requirements and can tell you how close you are. The basics are as follows:

All levels require at least 12 years membership in Marriott Rewards and one has to have attained a given level at least once in the past.

Lifetime Silver:
1.5 million points
600 nights

Lifetime Gold:
2.0 million points
800 nights

Lifetime Platinum:
3.0 million points
1000 nights