All I have is CCNA 1, 2, 3. Level 1 is really basic networking amd taugh me nothing.
Level 2/3 taugh me dynamic routing (BGP/OSPF) and some bits about layer 2 techs (spanning tree, trunking, ...)

They do help in my current job, but it is considered the basics of networking. Having the certificates themselves was not helpful at all. Actually, it was the opposite, as during the job interview, they said "You shoukd know this, it's in CCNA X!".

I think that knowing your shit is more important than getting certified. Running your own webserver or whatever is much more appreciated than getting a certification stating you can do so for example.