Welcome to LQ!!!
Syntax for mount should look like this:
sudo mount -t nfs 192.168.37.202:/home/user1/dir1 /home/user2/dir2
Not sure why you are using -o user name and password because if you are sharing via nfs then it should not require a password I guess unless you have done some specified settings.
Also if you want to mount using fstab then you can add up the above line as below in /etc/fstab:
192.168.37.202:/home/user1/dir1 /home/user1/dir2 nfs rsize=8192,wsize=8192,timeo=14,intr
Make sure you take a backup of /etc/fstab before making any changes. It is always good to take backup of important configuration files before you make any changes to it.