Experience not adding up

for some raison my account isn’t getting and exp win or lose in any matches i place its stuck at 13 and a half. any help would be great thank you

Only Heroes get experience from a game.

The Player (account) levels when a Hero levels. The Player (account) level determines the rarity of the chest (the best of common, rare, or epic).

A Hero-specific chest is awarded every 10 Hero levels. So this is one of the few times you might get more than one chest for level ups.

This was explained the first time you played Hots 2.0 and is shown on the right side of the Progression (Player) screen.