You can perform the below steps for QuickBooks Pro 2021 download:
Visit Intuit QuickBooks App Product webpage.
Then, click on Yes when asked “Will you be using QuickBooks Desktop in multi-user mode—multiple computers”.
After that, choose the Country, Edition, and QuickBooks version Pro 2021.
Now, you will reach the QuickBooks Pro 2021 download page, click on Download.
Open and Run the Quickbookspro2021.exe file.
Follow the on-screen steps.
Accept the License Agreement.
Enter the Product and License key and click Yes.
After the installation, open QuickBooks Pro 2021.