Crime against girls.

[tufguy]

"You do anything wrong to a girl, then it is a crime."

"You commit crime against a girl it is wrong."

"You do anything wrong with a girl, then it is wrong."

"Now adays most of the crimes are done against the girls."

Please check.

[Tarheel]

The first one is OK.

For the second one, try:

If you commit a crime against a girl it is wrong.

For the third one, try:

If you do anything wrong to a girl it is wrong.

For the fourth one, try:

Nowadays most crimes are committed against girls.