janu, go to informers in your CP [ Counters for users · Entries · all, by days (today, yesterday, 7 days, 30 days) ]
and paste in this code:
Code
Total users: $ALL_USERS$<br>
Today registered users: $TODAY$<br>
Yesterday registered users: $YESTERDAY$<br>
Save and paste your informer in template where you want to see it