You can't..... sorry gonna have to do a hard reset. Also keep in mind that a hard reset will trip FRP (Factory Reset Protection)..... so you will need your Google account info as well. Make sure you have that before doing the reset.
Thanks a lot,
First of all,
I didn't remember my Google account info.
Do you know how to recovery them?
Why will I need to have my Google Email if I can do factory rest?
Moreover, I read on the internet I can remove the screen lock:
Open the password by recovery (external memory)
This method will only work if your phone supports external memory cards.
1. First, download the Aroma File Manager app from the link below:
aromafm-1.80. zip
2. Now copy the Aroma application to any external memory “memory card” that you own, and then insert it into your Android phone, which is locked with a password.
3. Now turn off your phone, then boot into the official recovery mode. To do so, press and hold the Volume Down button and the Power button for a few seconds to enter the phone into recovery mode.
4. Once in the recovery, through the volume control buttons go to select 'Install Zip from SD card' by pressing the Power button.
5. Now select the Aroma File Manager file that you downloaded before.
After the installation is finished, the Aroma File Manager app will now open in recovery mode.
6. Now in the app settings select 'Automount all devices on start'.
7. Now go back to the main screen of the app and go to Data Folder->System Folder and find a file named password.key or gesture.key of the pattern or password lock.
8. Once you find any of those files, press and hold on the file and then choose to delete it.
9. Now go back to the recovery mode and restart the phone. Now you can create a new password or even change the graphic pattern because you have just deleted all the files related to the old password. Your phone will be unlocked again without asking for any password as usual.