I Found my old Apple Watch and I wanted to get into and I forget my Apple ID password and email what should I do

You can ask apple to remove the activation lock online on this page;

Remove the Activation Lock Here.

Or this;

If you can't remember/gain access to the apple id that paired the watch to the phone.Take the watch and it's receipt with the serial number along with some photo id and any other proof of ownership to an Apple Store and request that they remove the Activation Lock for you.

How to fix my appleID password I forget and the email address also, and the question? Now my iphone 7 is useless I can't use it. Please help me

Click/tap on the blue text in my last post.