Please see if you can find your product listed at https://www.vegascreativesoftware.com/us/support/service-center/ and the program download link there.

If you still have the serial number (valid license), you could also try https://www.magix.com/int/support/my-service-center/product-downloads/

If you then manage to install your product, please read carefully through https://www.vegascreativesoftware.info/us/forum/activation-of-sony-creative-software-era-applications--149297/

@Gerry-Goransson