I’m so sorry you find yourself in this situation. Sex goes with marriage. Your husband’s expectations are not unreasonable. What is unreasonable to me is that you were entered into a marriage so unprepared to be fully a wife. Of course you are scared! Since you two couldn’t get to know each other before you married, you do need to find a way to get emotionally and physically comfortable now.
To get some idea of how to answer your question without using American standards, I did what most people do these days: I went on the Internet. Here’s the most sensible suggestion I found:
“Some traditional cultures which practiced arranged marriage had conventional routines for introducing sexuality into the couple’s new life together. For instance, the Sanskrit Kamasutra of Vatsyayana recommends a multi-day courtship sequence for newly married couples beginning with complete sexual abstinence and progressing through specified forms of romantic wooing to actual sexual activity.”
I hope that you and your husband can work on this together. Arranged marriages can and do work. But it takes a willingness to be sensitive to each other, to listen to each other, and to be willing to make the effort.
I wish you well.