Can a girl get pregnant if a guy touched his penis and got precum on his fingers and then touched the girl's shoulder and then she took an immediate shower?

No. While "pre-cum" does contain viable sperm, sperm has to enter a vagina to result in pregnancy. The odds of that happening in the situation you describe are infinitesimal.

Answercum needs to enter you through your vagina to become pregnant and even then you may not become pregnant.What does your shoulder have to do with reproduction?I think you and some others on this web site need tostay away from males until you understand your own bodies and your reproduction systems!Dont count on the guy to make the right move that's for sure!You really should consider asking someone that's older and wiser that you can trust to teach you about the birds and the bee,s!I was taught about the female reproduction system when I was 11yrs.old,it was called sex Ed.Where were you?