MacBook Pro 14" 2021 1TB

Hi Guys,

Please, could you kindly help me? I bought a new Apple MacBook Pro 14" 2021 1 TB and I am trying to transfer my Serato DJ music files from an external hard drive onto my new Apple MacBook Pro? My previous laptop was an Apple MacBook Pro 13" 2016. I need to download all my Serato DJ music files onto my new laptop. I have not been able to do so. Please help!!!