You will need to do this process which can take some time unless you have a recovery key or a helper set up.
Try the steps in this knowledge base article if you forgot your Apple ID Password
If you forgot your Apple ID password - Apple Support
Try the steps in this knowledge base article if you forgot your apple ID
https://iforgot.apple.com/appleid
If you need more help reach out to Apple Support directly. You should be able to reach them here
Click here > Contact - Official Apple Support
or phone numbers
Click here > Contact Apple for support and service - Apple Support