Replacing the band on bushnell golf watch neo XS?

of course not we don't have a visual of it

https://www.google.com/search?q=Bush+Nell+neo+XS+watch+repair&rlz=1C1CHBF_enUS757US757&oq=Bush+Nell+neo+XS+watch+repair&aqs=chrome..69i57j0i22i30i457.5183j0j4&sourceid=chrome&ie=UTF-8

https://www.bushnellgolf.com/contact/

The above link includes an international contact. That direct contact should provide at minimum whether they can supply a band and/or what would be necessary.

However, you may be able to use a Nato band on the watch as an alternative. www.clockworksynergy.com

Lastly, you might take it to a watch repair shop, have them exactly measure the band (the broken one) and see what they might supply.

Yes, batteries are readily available.

https://www.google.com/search?q=golf+buddy+wt3+battery+replacement

..

put back in box and send it back

check whether yours is miles ,yards or meters or lkms to get such large variations

click on this link:
www.bushnellgolf.com/downloads/neox-watch-fullusermanual-2013.pdf

Report it to the golf course clubhouse.

go online with Bushnell. Customer service should be able to help you.