What would a TSH level of 7.75 indicate. Should I start treatment at this level of tsh?

Hypothyroid likely. This is not something you should or can do on your own. Go to a trusted family doctor or endocrinologist to be absolutely diagnosed and treated.
Hypothyroidism. If you are having symptoms of low thyroid with this TSH I would go ahead and start thyroid medication but it you are not having symptoms I would recheck your TSH in a few months to make sure it was an accurate level before deciding whether treatment is necessary.