Q.This Linden Has No Buds Yet? Is It Too Early?
It has been fine every other year just wondering if it’s dead or just needs some more time.

Certified GKH Gardening Expert
It could, still. They will set leaves a few weeks before they bloom. There is a chance that it could happen at the same time. Just keep caring for it and wait and see, for now.
You could take samples up to your nearest extension office, as well. This article has a link at the bottom that will help you to find the closest one to you:
https://www.gardeningknowhow.com/garden-how-to/info/what-is-extension-service.htm
This article will help you with the care of Lindens:
https://www.gardeningknowhow.com/ornamental/trees/linden/linden-tree-information.htm