how do i turn off notifications from xbox on my pc

You can go through the following settings:

Notifications in the bottom right corner

Manage notifications in the upper right corner

And you should have an Xbox option to tick off

Windows game bar is a nuisance to me, i have all notifications turned off on my pc and with the app itself and i still get notifications from it across my screen. i dont use my pc for gaming i just want this app to stop sending unwanted notifications when
i have them all turned off

I've turned off all system notification sounds on my PC so I don't see the point.

There isn't a way to turn off the achievement tracker but there is a way to turn off the notifications if that would help ignoring them. To know more on how you can do that, check out Pop-up notifications on Xbox | Xbox Support.

You can turn off notifications in your profile.

i would have linked the info on how to do this from the support section,but it keeps saying pages unavailable.