It is broken cracked and leaning over house,
It can be, but you may be left with the same problem again down the line. I would opt for complete removal, if you can.
Here is an article that will offer some tips on pruning a cactus:
https://www.gardeningknowhow.com/ornamental/cacti-succulents/scgen/cactus-pruning-info.htm
I bought seeds in Sedona Arizona 15 years ago and planted them. They looked like little pieces of pepper. From this picture, does it look like I am growing it correctly? I kind of expected it to grow up having the arms instead of all of these other Main stems. Any advice?
It can take 75 years to get those arms, 60 in your case. It looks good though. Likely these are all individual plants. You may want to separate out a couple of them and put them in separate containers.
https://www.gardeningknowhow.com/ornamental/cacti-succulents/saguaro/saguaro-cactus-care.htm
I’m afraid that arm will grow between my house and the gutter
There may not be much that you can do, but you may try to bend it using wire that would, normally, be for bonsai. Other Arborculture techniques will come in handy, here. This article will help:
https://www.gardeningknowhow.com/ornamental/trees/tgen/living-tree-sculpture.htm
I'm in Yuma, AZ. and pictures will show 10-12 ft tall Saguaro, that is about 15+ years old. For several years we've noticed the scaring (scab?) around the base, and thought maybe normal. But the picture will also show, above the scaring appears to be some orange speckles. Should I be concerned or do you have suggestions. THANKS VERY MUCH
Those spots could be from insect feeding, fungal infection, or more. These articles should help:
https://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/az1399.pdf
https://www.gardeningknowhow.com/ornamental/cacti-succulents/saguaro/saguaro-cactus-care.htm
https://cals.arizona.edu/mohave/master_gardeners/lake_havasu/articles/saguarocare.pdf
The cactus is located next to the pool cool-deck and is about 30 ft. high. It has many long arms and one is leaning (growing into) another arm. I am afraid some part of it will fall unexpectedly and hurt someone. I would like to cut it back somewhat. Would a nursery want the cut off parts?
If it's on your property you can prune it, however, that can leave it open to insects and disease. Since it is a safety issue, that is the best solution. I would suggest hiring a professional to prune it. The size and age of the cactus may require special considerations.
Saguaro cactus won't root from cuttings so I doubt the nursery will want it.
This article may help:
https://www.gardeningknowhow.com/ornamental/cacti-succulents/saguaro/saguaro-cactus-care.htm
What do you suggest? Part of my catus tree broke off. I was told that people buy the pieces or have someone take it away But my main concern is. will the rest of the arms or the tree fall?
Without treatment, they can be. And larger ones are quite heavy.
This looks much like bacterial necrosis. It is not an easy condition to control, as that is mostly by way of keeping all infected materials away and off of the cactus. Any infected parts of the plant should be thrown away. This includes the arms.
This article will give you more information on what it takes to get rid of this disease.
https://www.gardeningknowhow.com/ornamental/cacti-succulents/saguaro/bacterial-necrosis-of-saguaro.htm
are this trees in imminent danger of other arms or the tree its self to fall off or just completely fall over onto the street or even the house
This cresting saguaro is in an HOA landscaping in Sahuarita AZ and appears to have been planted too close to larger Mesquite trees. It appears to be stunted and has a dark color appearance. Should it be relocated or the should the mesquite trees be either trimmed substantially or relocated?
Saguaro cactuses almost always die when transplanted. That leaves trimming or removing the mesquite trees to allow more sun on the cacti.
https://www.gardeningknowhow.com/ornamental/cacti-succulents/saguaro/saguaro-cactus-care.htm
https://www.gardeningknowhow.com/ornamental/trees/mesquite/transplanting-mesquite-trees.htm