There isn't one. 5e assigns DCs according to the task attempted, regardless of who's doing the task or what level/abilities they have. It's technically not even based on the task, but the specific action, so it's not technically correct to assign a DC to a wall to climb prior to a PC trying to climb it, although assigning static DCs is a common shortcut. Instead, the PHB has a list of common DCs by difficulty of the task (as determined by the GM), which are:

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