IOS firebase realtime how to write data?

Question

iOS

Good afternoon! There is an application with authorization and login, when authorization opens ViewControl. You need to write down the data, that is, the date of birth, gender, type of person 1 and 2, and write the checkboxes inside the user's UID, that is, there is an email, name, passward, you need to add pol, tipPerson, date, int value.

I hope you got what I meant