How to upgrade in Build a Store usually means spending your in-game money on upgrade buttons inside your shop, such as better shelves, more stock space, or faster service. Public Roblox results point to My Store / Build Your Store gameplay where upgrades are purchased in-game to grow the shop and improve earnings.

Quick steps

  1. Earn money by selling items or serving customers.
  2. Walk to the upgrade station, button, or menu in your store.
  3. Click the upgrade you want.
  4. Pay the required cash.
  5. Repeat to unlock stronger store growth and higher profits.

What upgrades usually do

  • Increase how much money your store can make.
  • Unlock new items or display areas.
  • Improve speed, capacity, or customer flow.
  • Make it easier to scale from a small shop to a bigger one.

If you mean the Roblox game specifically

Some videos and forum discussions about similar Roblox store games describe upgrades as stat improvements or multiplier boosts that you buy with currency. A common pattern is that each upgrade raises a number like earnings, capacity, or speed, then the game uses that higher value whenever you earn money.

Troubleshooting

  • If the upgrade button does nothing, check whether you have enough cash.
  • Some upgrades unlock only after earlier ones are bought.
  • If the game reset or changed, the upgrade path may differ from older videos.

Simple example

If an upgrade says it boosts income, you buy it after collecting enough money, then your next sales should pay more than before. That is the core loop behind most Roblox store tycoon upgrade systems.

TL;DR: earn money, find the upgrade button in your store, buy the upgrade, and keep repeating to grow faster.