It's connecting two screw fittings, and then installing toilet seat (two bolts + nuts). If it's a particularly fancy model you may have to plug it in.
This is about as complicated as replacing a furnace air filter, and takes about as long. If you get someone to do it for you, you're paying for them to drive to your house, not the actual time installing it (which is trivial).
If it needs hot water you can always split off of the sink that is undoubtedly next to it.
But most bidets that do warm water do not use a hot supply, because it takes too long to heat up. Most use a tank or tankless in the seat, and just need a normal 120v plug.
It's connecting two screw fittings, and then installing toilet seat (two bolts + nuts). If it's a particularly fancy model you may have to plug it in.
This is about as complicated as replacing a furnace air filter, and takes about as long. If you get someone to do it for you, you're paying for them to drive to your house, not the actual time installing it (which is trivial).