Generally how many days it takes to get your first download?

People may not even have seen your image. If for example you add a beautiful picture of a flower to Adobe Stock, it will be with 20 million other wonderful pictures of flowers. People will look at maybe the first 10-100 pictures when they do a search. Searching is everything; make sure you set good subjects and keywords.

Hello,

It can take a very long time or a few days. You need to have rather unique images, that aren't represented. Most themes these days are overrepresented!

It all depends on how commercially relevant & appealing your images are to current Stock buyers. 

In this early post-COVID environment, "people in surgical masks" are not in much demand as they were 6-12 months ago but images of "people in natural, social settings" are.  Likewise, if your keyword category is a fiercely competitive one such as sunsets/sunrises, clouds, flowers, plants and kittens, it's quite possible you will never sell anything.  Or if you do, it may take a long time.   For best results, submit lots of different images in diverse categories.  You may not sell a lot of images at first but you'll reach a wider audience.

Don't expect to get rich soon. You will need probably thousands of assets in your portfolio to get a decent number of downloads at regular intervals.

There is no particular waiting period for sales to commence; if you have uploaded the type of images that buyers are looking for, and you have added appropriate and useful keywords, your images will sell. My first sales occurred about 2 months after my first upload. I have no idea whether that is typical.

If you join the Adobe Discord Community for Adobe Stock you will become informed about webinars held by Mat Hayward (Adobe Stock Evangelist) and others on topics relating to Stock. Mat has also posted useful videos to YouTube. Search on "adobe stock mat hayward". 

Here's a link to the Discord Community: https://discord.com/channels/692119372793118831/692123858903236740