I suppose from your text that you got a refusal for technical problems. Please always state the refusal reason!
The picture is really nice, but you overdid the editing. A less aggressive editing would have been better. There is a lot of noise in the picture and I see halos between the horses and the sky:
Details on the horses fur are washed out, and you may have added too much saturation.
You absolutely need to examine your pictures at 100% and 200% to judge the quality of the image. Noise, halo and other artefacts are shown then.
If you are new to stock, you should consider these resources: https://helpx.adobe.com/stock/contributor/tutorials.html
Please read the contributor user manual for more information on Adobe stock contributions: https://helpx.adobe.com/stock/contributor/user-guide.html
See here for rejection reasons: https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
and especially quality and technical issues: https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html
Thank you so much ABAMBO!
Really appreciate your time replying me.