The Higgs boson itself does not have a "density" in the traditional sense because it is a fundamental particle. Density is a property associated with macroscopic objects, not individual particles. However, the mass of the Higgs boson can be used to infer certain characteristics.
In terms of its mass, the Higgs boson is relatively heavy compared to many other elementary particles. The measured mass of the Higgs boson at the LHC is around 125 giga-electronvolts (GeV/c²). To put this into perspective, it is about 133 times more massive than a proton. Compared to other fundamental particles, such as electrons or neutrinos, the Higgs boson is significantly heavier.
It's worth noting that the mass of the Higgs boson is not related to its density. Density is a measure of how much mass is packed into a given volume. Since the Higgs boson is a point-like particle, it does not have a volume in the same way as macroscopic objects, so talking about its density doesn't make sense.
In summary, while the Higgs boson is relatively heavy compared to other elementary particles, discussing its density is not meaningful since it is a fundamental particle without a defined volume.