Building aplication with unreal engine 5

Hello, I am making an aplication with unreal engine 5 widgets… Is there a way to make that when someone enters some text (for example e-mail adress) on for example editable text box, that unreal engine store that text in a .txt or similar file within unreal engine 5 folder. Can someone please explain to me how it is done step by step because I am relatively New to unreal engine 5 widget system. I thank You in advance!