What's the worst that can happen with over-inflated tires?

I took my car to the dealership last month due to a mi or issue. My tire pressure light was also on so I had them add air.

Few days later, the light is back on. So I checked the pressure on all 4 tires. It is supposed to be 32 PSI. One tire is 69 psi, and another is 57.
That was obviously them who did it.

Do I need to let the air out or just keep driving? Will it mess up anything?
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