Installation problem of civicrm on wordpress
It looks like the mysql user you use doesn't have enough permissions on the database (or invalid database/password?)

This page lists all the privileges that civicrm mysql account needs:

https://docs.civicrm.org/sysadmin/en/latest/requirements/

  GRANT
  SELECT,
  INSERT,
  UPDATE,
  DELETE,
  CREATE,
  DROP,
  INDEX,
  ALTER,
  CREATE TEMPORARY TABLES,
  LOCK TABLES,
  TRIGGER,
  CREATE ROUTINE,
  ALTER ROUTINE,
  REFERENCES,
  CREATE VIEW,
  SHOW VIEW
ON civicrm.*
TO 'civicrm_user'@'localhost'
IDENTIFIED BY 'realpasswordhere';


you would obviously need to adjust with the database and user account you have