Yes
In case thats not what you meant, here's how to add hearts by your name
/scoreboard objectives add Hearts health
/scoreboard objectives setdisplay list Hearts
I've heard of this before but I've never understood as to why. Could be that there's more RAM that what Minehut offers? Or that maybe Minehut redirects you to the Pterodactyl servers and you get infinite players there? I donno.
Which is why you should download your files on a regular basis, as Minehut servers can be more easily hacked than a personal computer or, the better option, Dropbox.