I don''t recommend that you eat tuna on a daily basis because tune fish, being a large fish, accumulates a lot of mercury in it, which, with time, could build up to high levels in your system. Add to that the fact that this is canned (not fresh) food that is rich in salt, and kept in metal cans which could release some of their contents into the tuna.
The maximum safe intake of protein per day for a body builder is debatable, but since you have just started working out, I recommend 2 grams per kg body weight per day. As you progress in strength training and build up more muscle mass, you can go up to a maximum of 2.5 grams per kg body weight per day. This should include all sources of protein (including eggs, grains, soja etc). If you exceed this amount, you may cause damage to your liver and kidneys.
One thing to remember is to consume proteins in a healthy manner: for example tuna with steamed vegetables, or in a salad, turkey in a salad as well, so don't eat proteins exclusively on the expense of vegetables. Also keeping well hydrated is crucial to facilitate the clearance of protein waste by the kidneys.