You have 2 sorcery points, and you gain one additional point every time you level up, to a maximum of 20 at level 20. You can never have more sorcery points than shown on the table for your level. You regain all spent sorcery points when you finish a Long Rest.

Do sorcery points replenish?

Sorcery points are replenished to a maximum.

You may convert your unused spell slots into sorcery points before taking a long rest, however they cannot exceed your maximum.

Do sorcery points reset on short rest?

Once per day when you finish a short rest, you can recover a number of sorcery points equal to one third your sorcerer level (rounded up). For example, if you're a 4th-level sorcerer, you can recover up to two sorcery points. You regain the use of this ability whenever you finish a short or long rest.