I want to send data from nrf52 and read it in arduino
The nRF52 UART - like any other UART - neither knows nor cares what it is connected to. It just sends bytes, and receives bytes.
So "Arduino" is irrelevant here - you just need to get the UART to transmit & receive.
In fact, to start with, don't use the Arduino at all - for testing, use a PC and a terminal app (eg, TeraTerm, PuTTY).
Don't add the complication of the Arduino until you have it fully working with the PC.
There are examples using the UART in the SDK; eg,
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/uart_example.html
