Can you please ID this pear tree?
It's often very difficult to identify unknown fruit varieties including pears, but this looks like it might be Kieffer. That is not a commercially produced variety and I could find very little information about harvest timing and ripening.
Pears generally do not ripen on the tree like apples or some other fruits. For proper ripening, they are picked when physiologically mature, and most varieties require cold storage to ripen to good eating quality. If they are picked too early they may not ripen properly. if picked too late, fruit texture often becomes mealy and they will not store well.
Harvest timing depends largely on the variety and weather at your location. The information i found indicated that Kieffer needs about 135 to 155 days from full bloom to harvest. To gauge fruit maturity for harvest, try gently lifting and tilting the fruit. When mature, it should separate from the branch with the pedicel (stem of individual fruit) intact.
Different pear varieties require more or less time in cold storage to ripen properly - ranging from a couple of weeks to two months. I would try storing your pears in a refrigerator for two weeks, then pull a few out and keep them at room temperature for 5 to 7 days. They should soften, maybe turn yellow, and become juicy, sweet and flavorful. If not, wait another two weeks and try again.
It's hard to know what the actual fruit quality should be without really knowing what the variety is. Not all pear varieties will develop buttery, juicy, sweet fruit, but following these guidelines may help.