It's not a max, not at all.
Spark doesn't "recommend" a burn amount. You can only have one variable calculated when two variables rely on each other. You can't calculate BOTH burn and intake calories. So spark assumes a burn, and calculates the intake for you.
It's based on a default assumption to start with of 30 minutes a day 3x a week. At your current weight, that would on an average activity burn that many calories.
You should do as little or as much exercise as you personally find challenging and acceptable. There isn't really a "should". Do what you do.
If you're new, try doing 10 minutes a day. After a while you might want to increase to 20 minutes a day.
The key is to make sure your fitness goals "calories to burn", which you can manually set on fitness settings, is accurate to what you're tracking. The calculated intake is based on calories to burn, not calories you track as burned when you input fitness.
It's also common when starting a new fitness regime to retain water for a few weeks, which can mask any continuing fat loss. Don't worry about the scale at all. Keep up the good work and if you work out more than that goal, change the goal. :)
Deb, in New Zealand