can you update macOS High Sierra to macOS Catalina

It depends on your Mac and how old it is, if you can go on your mac and click the Apple logo in the top left-hand corner and click About this Mac, then it will show you the year of your mac and the model of it and take that and type it in here as a reply and then i will see if you can upgrade.

We need that information in order to see if you can upgrade your mac or not.

Please either copy the details or write them own hear so we can help you. We need the year and model of it all which you can find out by following the steps above.