Is there a way to replicate values just to some clients?

You can use conditions to filter the replication of that property to certain clients. The most appropriate check that exists is probably filtering to the owner.

DOREPLIFETIME_CONDITION( AActor, Property, COND_OwnerOnly ); // Send only to the owner of this actor
DOREPLIFETIME_CONDITION( AActor, Property, COND_SkipOwner ); // Send to everyone but the owner

etc.

You can check out the other conditions as well, though the rest may not be appropriate for what you want.