1.First login into cpanel and click file manager and find project name and under project check wp-config .php

2.Check database details in wp-config.php , like db name , db-user, db-password .

3.After getting db name then login into phpmyadmin and click on database name .

4.click on db name and search ap-users table 

5.After that click on Edit ( user login)

6.Search id ( user_pass ) and select function MD5 and set new password and Save ( Go )