What happens if I don’t sell my shares in Swedish Match (SWMA.ST) to Philip Morris ($PM)?

Hi All

A bit of a noobish question, however, I do not know how this works.

I've held a decent chunk of shares (57 shares) in Swedish Match for a few years as I love their products and believe in the business case of the company. It seems that Philip Morris believes in the company as well given that they want to buy my shares for 118 USD per share (previously 106).

In principle, I would have preferred to just keep my investment in Swedish Match, however, I don't fully understand what will happen to my shares if I do not accept the offer by Philip Morris and sell my shares.

Would anybody be so kind to educate me?

Thanks in advance.