This is going to be a workaround, but since UiPath reads the table with a default currency type, maybe you can try “Find/Replace Value” activity first and try to find the currency symbols. And then replace them with the same string that they have. This way, you will overwrite the currency value with a string and the new value is going to be the type of a string. After that, you might read the string as it is.
This work around method I’d end up suggesting to update the excel to be a number only and separate field for currency if UiPath can’t read the actual currency type.