Congrats on your new senegal parrot.
The main recommendation for screaming is to absolutely ignore it. This bird is still fairly young so it will probably be faster for the bird to figure out that it will not get attention for screaming than one that has been reinforced for screaming for a long time.
Then you have to use other techniques so that the bird will learn what to do to get attention instead of screaming. You could teach the bird to make a more pleasant sound (a whistle, saying a word) and reward it with attention for that. You could immediately reward the bird with attention when it stops screaming or just give it attention when it's quiet. You could also teach it tricks and reward it with attention for doing tricks, and it'll likely try to do those tricks instead of screaming at you.
Overcoming screaming is a long term issue and takes patience. I wish you lots of luck.