Please help me with a riddle

You wear me but I weigh nothing, I burn you but leave no scars. I'm worth more than you can imagine but I am not real, what am I?

Hint: Ends in L, Middle letter is S.

I know it isn't the correct word. But something like: "personal"?
And how much letters? :)

I appreciate Orfelius' radical lewdness, but obviously it's not lust, but arousal or at least, bisexual.

It's -Lobster- in Zero K team games.

Welp, this has been helpful

Trueskill (the alternative to Elo):

You wear it because it's bound to your account (but it weighs nothing because you can always make a smurf).

It burns when you see the number and it's lower than everyone else's.

It's worth a ton though because it embiggens epenis when high and gives you better teammates when low.