How do you spell crushul?

"Crushul" is not a standard English word. It is likely a misspelling or a made-up word.

Do you mean:

* Crucial - meaning very important or essential?

* Crush - meaning to press something very hard, or to have a strong feeling of love or admiration for someone?

* Crushed - the past tense and past participle of "crush"?

If you can provide more context, I may be able to help you spell the word correctly.