expression
the more you do, the more...
A pattern meaning 'the more one does something, the more/less something else happens'. The verb before すればするほど is repeated in the conditional and dictionary forms.
日本語は勉強すればするほど面白くなる。
The more you study Japanese, the more interesting it becomes.
この酒は飲めば飲むほど美味しくなる。
The more you drink this sake, the better it tastes.