my apps wont install after downloading on my android tablet 5.1

[AC Question]

i use google play to download now i need to update google play services it downloads but doesnt install

 

[B. Diddy]

Welcome to Android Central! Which device? Are you getting a notification that Google Play Services needs to be updated? That usually updates automatically in the background, but if you tap that notification, it should bring you to the Play Store page for Play Services. There, you can tap Update, and it should force the update.