Most scopes that are decent enough do not come with rings/mount.
Some Walmart clamshell packs do come with rings/mounts. While I would recommend Bushnell Banner to be the minimal level of quality and prefer to suggest Bushnell Trophy line instead and buying rings/mount separately, I have started out with CenterPoint scopes with decent results for 25-50 yard shooting. Here's one that I would suggest at lower cost that comes with rings -
https://www.walmart.com/ip/CenterPo...ag-and-Bdc-Illuminated-Reticle-Black/49772623
I have CenterPoint 4-16x40 Adjustable Objective with quick detach mount and Bushnell Trophy 3-9x40 with rings I can "Pay It Forward" to your son for our gun rights future.
Let me know if you are interest.