Create a Power Automate flow that starts with a trigger, take input from Power Apps. Within the flow add another action with the expression base64ToString() to decode the Base64-encoded text into a readable string. Finally, you can use the output of this action which you can see in powerapps.
To get this text into Word, run the flow to decode your Base64 text, then copy the resulting readable text from the flow’s output and paste it into your Word document.
