You can install the Mercado Pago extension for your Adobe Commerce store at no cost through the Adobe Commerce store. To do this, follow these steps:

1. Access the official Adobe Commerce store. In the search engine, type Mercado Pago Payment and click on the official extension.
2. In the extension options, open the Edition menu located on the right side of the screen and select the edition you need for the extension according to the platform you are using.
3. Open the Your store version menu and select the type of version you need for your business. Currently you can choose the "2.4 (Adobe Commerce (cloud))" version.
4. Click Add to cart to add the extension to the cart.
5. Click on the cart located in the upper right part of the site and then click Proceed to Checkout to finalize your purchase. The official Mercado Pago extension is free of charge.
6. To continue, you will need to log in with your Adobe Commerce account or create a new one. Once you are inside your Adobe Commerce account, you will be able to download the Mercado Pago extension and install it.