I was hoping to convert my compositions to Mp4 so that i could use them on My social Media

I would like to Format my compositions to mp4. I've noticed i have no freedom in composing and using my artistry to share on other platforms, I've started using Social media and I would like to make music for my socials that coincide with my messages and make people feel happy. This is also a great way to share my compositions with others. I don't have a orchestra to record the melodies but it would surely help to use the tools at my disposal. Could someone give me advice on utilizing Muse score to convert my artistry to MP4 so that it may be downloaded to my Videos.