I'm here to help you today, sallyannehaydon.
I can see that you've tagged this post for QuickBooks Self-Employed (QBSE). If you mean you want to convert QBSE to QuickBooks Desktop (QBDT), we're unable to perform this process.
QBSE is different from other types of QuickBooks products. Right now, we currently support migrating from QBSE to QuickBooks Online.
I suggest checking out our Quickbooks products to find out what suits your business needs.
Also, you'll want to consider reviewing this link to learn the fully supported QBDT products: QuickBooks Desktop service discontinuation policy and upgrade information. From there, you can find which version of QuickBooks is needed to keep using your company file.
Keep me posted by commenting below and tag my name if you need additional information. I'll be right here to help you.