Yes and no.
By definition, a quadrilateral is a closed figure with 4 sides. So any square or rectangle will answer your question.
However a polygon with 4 sides which are unequal in length will not have 3 right angles.
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The sum of the interior angles of a quadrilateral is 360 degrees. If three of the angles are right angles, that is, of 90 degrees each, the the fourth must be 90 degrees. So you can have a quadrilateral with three right angles but its fourth angle will also be a right angle. So exactly 3 right angles is not possible.
A quadrilateral is ANY closed figure with 4 sides. Therefore, it also has 4 angles - any of which may, or may not, be congruent. About the only general statement about angles that applies to all quadrilaterals is that the sum of the angles is 360 degrees. By the way, it is possible for a quadrilateral to have 3 congruent angles, and the fourth angle not be congruent with the other 3.
There can be at most 3 obtuse angles in a quadrilateral.
No. Very few of them do.
well for any quadrilateral you would need 3 other angles, then you would add them up, and then subtract from the total you get out of 360(the number that all quadrilateral angles add up to).