What details do we need to enter in below 3 fields after installing redis on server?

You would need to ask your hosting provider/server admin for this information. Generally, unless it has been changed or a remote server, the placeholder information from those fields for the address and port number can used. 

Just to help other users in future

Redis Server is same as 127.0.01

Port: 6379 (default) change is advise for better security

https://redis.io/topics/quickstart

Password can be set in redis.conf and can be enable by removing the # from

To set the password, edit your redis.conf file, find this line

# requirepass foobared

Then uncomment it and change foobared to your password. Make sure you choose something pretty long, 32 characters or so would probably be good, it's easy for an outside user to guess upwards of 150k passwords a second, as the notes in the config file mention.