Automatic backup in windows

Hello everyone, I want to schedule the automatic backup in windows
postgresql platform.

I have attached the script, if any changes is required please correct and
send back. This is my humble request.
Actually I don't know to write the windows script. Otherwise if incase any
have the script please send me .

Db name:rathi26
Backup file path:C:\Users\gangireddyobiredy\Desktop\case.sql

Thank you And Regards
Obireddy. G

@echo off
SET day=%date:~0,2%
SET month=%date:~7,8%
SET year=%date:~6,4%
SET hh=%time:~0,2%
SET mm=%time:~3,2%

SET BACKUPDIR=C:\users_Backup
SET datestr=%day%-%month%-%year%_%hh%-%mm%
SET dir=%day%-%month%-%year%
mkdir C:\users_Backup%dir%

#Provide database name here
SET db1=dbname1

echo datestr is %datestr%

SET BACKUP_rathi26=C:\Users\gangireddyobiredy\Desktop\case.sqll
SET rathi26=%db1%%datestr%.sql

ECHO Backup file name is %rathi26%

SET PGPASSWORD=
echo on

#Execute Backup for database
C:\Program Files\PostgreSQL\13\bin>pg_dump.exe -p 5432 -U postgres -v -d
rathi26 > C:\Users\gangireddyobiredy\Desktop\case.sql
echo Backup Completed