How do I upgrade the MYSQL database from Craft 2 to Craft 3 on GoDaddy
Generally speaking:


Get the Craft 2 site running locally.
Perform the upgrade to Craft 3 locally according to the docs: https://docs.craftcms.com/v3/upgrade.html
Test and make sure everything works as you'd expect.
Upload all fo the files to your web server via FTP (including composer.json, composer.lock, the vendor folder, etc.).
Once load, load the Craft control panel, you'll be prompted to let Craft update the database.
Let Craft update the database.
Done!


Specifics may vary depending on the site and your actual requirements.