I’m not getting ask to buy permissions

PS:

If needed:

Seems Family sharing has to be set-up to use "Ask to buy"

What is Family Sharing? – Apple Support

or

You might want to check through how "Ask to buy" has been set-up:

Approve what kids buy with Ask to Buy - Apple Support

Wondering if Apple Support's article (link below) may help you:

If Ask to Buy isn't working - Apple Support