How do I get access to my activation lock since I have forgot my apple ID and password

Go to https://iforgot.apple.com to retrieve the ID and reset the password. See also If you forgot your Apple ID - Apple Support

Failing that, take the device, the original purchase documents, and some ID to an actual Apple Store (make an appointment) and ask if they can unlock it. (Many Apple Stores are currently closed.)

Those are your only options.

Take the device and proof of purchase to Apple.

How to remove Activation Lock - Apple Support

This tells what to do if you forgot ID or password.

https://iforgot.apple.com/password/verify/appleid