Is there a way to reinstall this pls?
***Edited to add labels***
Hi tammyj & welcome to the Community!
Are you referring to the Play Store? If that's the case, you can't uninstall/reinstall it.
Have you tried restoring your phone?
Let me know!
It would help if you defined what "not working" means. Error messages? What shows up on the screen? What phone do you have? "Not working" provides no helpful information.
Clearing that app's data and/or cache might help, depending on what the actual problem is.