I was about to ejaculate so I wiped my penis nd sperm in my hand and then later I fingerd my gf . now she s not getting her periods its delayd for a week . is any chance of pregnancy?

Hello and welcome to EmpowHer,
Sperm can only survive a few minutes in open air. It dies even quicker if handled. By the time you touched your girlfriend the sperm could not make her pregnant.
Periods can be late for many reasons besides pregnancy. It is actually very common to have missed or irregular periods during adolescent years. These irregularities can be due to stress, change in sleep, eating patterns, exercise etc that all effect hormones in the body.
Below I have posted a link to a HER article to talks more about outercourse and pregnancy.
https://www.empowher.com/sex-amp-relationships/content/answers-women-am-i-pregnant-after-dry-sex-making-out-clothes
Faith