Is there a question involved? Like can the tree be trimmed to less than 20'? If so, the answer is no. Taking it back below 20' will effectively remove all the canopy/branches, leaving just a collection of bare trunks. This is known as topping and is a widely discouraged practice with the care of any tree.

If the tree is too large for the siting or not in good health - and it looks like it might tick both those boxes - then remove it completely and plant something else that will stay in proper scale for the location.

the customer requested that the tree branches be removed from resting on the house (solar panels), fence and shed.

there were also trees trimmed in the backyard relieving the screened in porch enclosure. 3 trees trimmed in total.

Thank you for letting me know. In your opinion, what is the most liked, user friendly, professionally respectful, platform to advertise(if someone was looking to)?

Since you are listed here on Houzz as a Professional, you can use that - the professional listing - as a means of advertisement. Helps if you have a good website to go along with it :-) Otherwise, local professional sourcing websites - Angie's List, Home Advisors, etc. - will provide the biggest bang. This is a global website so a service that is so tied to a specific location may not draw a lot of potential clients. I am not on FaceBook so have no idea how that works but I do know it has lot of very local resources similar to NextDoor or My Neighborhood that might work well.

thank you very much!

You also might want to rethink your advertisement. This one was just plain incoherent. You clearly didn't put any time or effort into it, the pictures are very poor, and you did such a poor job communicating what service you are offering that it wasn't even clear that this was an advertisement! How hard is it to write a couple full sentences (with punctuation and capitalization) describing who you are and what service(s) you are offering? And how hard is it to come up with a couple pictures that show a clear "before and after" .. and without your phone junk on the edges?