I am unable to find how to upload .blend files from a dropbox. I wanted to show a game I started working on but was unable to find how to upload it. This may have been asked before but just incase it hasn’t I’d like to ask. Thanks for your patience with my ignorance 
after a few more posts you can share them here,
pasteall.org and theorysend.com can send .blend files under 30 mb
If your file is on dropbox then why not just share it and post a link to it
To upload you’d need a local file. If it’s hosted elsewhere then why upload ?