I have used my usb in a shop and when i have gone to open my usb on my mac the files are shortcuts

- i have no clue on what to do please help
i went to a shop and my files on my usb are now shortcuts and my macbook air wont open them

First, you need to leave it in the rice for about a week.  It takes a long time for it to absorb the moisture.  One day is not going to be enough.
Unfortunately, water/liquid damage is difficult to repair, and you may never get the iPhone to operate properly.  Unless you have a damage protection plan in place (like AppleCare Plus, Carrier insurance, or your credit card company), then you are out of luck for that device.
However, you can possibly get out-of-warranty service/replacement from Apple for $149.

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